Outboard motor fuel leak 2011 Honda BF90D outboard motor. Dec 19, 2005 #1 "Greetings: I have a Honda 4- 2 days ago · Two of the 3 carburetors are leaking gas on my 40ELPT, 4S, outboard (2000 year) motor. Degree in Marine Technology. Whenever the motor is running and engaged, a significant amount of gasoline is leaking out of a black hose that must be a vent hose normally because it doesn't connect to anything on one end. so either the gasket wasn't there, o-ring wasn't there, the bolts were loose, rather than coming in Jan 28, 2018 · Outboard Motors Forum. I have found it has become very heavy on fuel. I had a mechanic come today and the boat didnt show any symptoms of a fuel leak and ran fine. Consider an air leak in the fuel line on the Go. It does more than creating a few frowns at the gas · 2004 F225TURC Yamaha Outboard FUEL 1 Diagram and Parts A high pressure line with a hairline crack, etc would be suspect. My sons and I (ages 10 and 11) replaced the obvious worn parts of the motor including a complete carburetor kit, the low speed carburetor needle, the entire ignition system, the upper crankshaft seal, gas tank o-rings, impeller, impeller plate, and impeller housing, and the pull rope. Thread I noticed a fuel leak and after scouring this board I learned that it is coming from the fuel vent on one of the carbs (leaking from the silver disk about 3/4"). I have cut the ends off the hose connections and reapplied but it get back the dock yesterday i had to have my friend pump the bulb to keep it running, even though the bulb seemed hard engough to be ok still could not make out why the load on the motor would not work with out steady pumping on the Outboard engines lose fuel prime because of an air leak in the fuel system. May 13, 2009 #1 Feb 20, 2023 · Outboard Motors Forum. Ran fine in the driveway , put it in the water and there was a gas slick . I Oct 1, 2018 · Suzuki Outboard Parts Forum; If this is your first visit, be sure to check out the FAQ by clicking the link above. Your leak is coming from somewhere much higher than that. The 3 necessities for a properly functioning motor, fuel, spark, compression. Johnson 90 fuel/oil leakage issue. PUT HOSE CLAMP ON IT AND NO MORE LEAK. My motor is a 1987 200hp. an awful lot of it. However, I am getting a slight gas leak around the Aug 4, 2021 · Hi folks, I have a DF 140, 2019, and had no issues until two days ago. DF 140's, mine included, occasionally have a vapor lock problem where the fuel vaporizes in the fuel line and the low pressure pump seems to have problems getting rid of the vapor. I suspect an air leak in the fuel line. beckerjs Outstanding Contributor Outboard Dec 13, 2023 · In troubleshooting a Mercury 2-stroke outboard, one possible issue could be a fuel line air leak, causing a fluctuation in the fuel supply. Sep 11, 2023 · Inspect Fuel Lines: Examine the fuel lines connected to the primer bulb for any kinks, blockages, or damage. Thread starter Dveres95; Start date Mar 29, 2014; D. It started out as a small drip and is now coming out at a steady stream. This is the valve that shuts off fuel flow into the carb bowl. They will leak when tilted up (or in the "trailer" position if you like) but should not May 25, 2022 · Low level is usually a misadjusted Float or low Fuel Line Pressure, a high level can also be from that, but a heavy Float from Fuel Absorption, or too much Fuel Pressure. Ted Williams Outboards . Jason | Degree in Marine Technology. Step #4: Mark the flywheel with a marker Mar 5, 2025 · Just brought it home NEW last night, lund with 40hp 4 stroke efi . Feb 25, 2025 · Outboard Motors Forum. Mercury Mariner Outboard Forum basically allow raw fuel to drip into to the carb venturi and the other big issue was floats becoming saturated with fuel. Eveinrude 150 Ocean Pro - Fuel Leak at Carb - SS Ball Fell Out! Thread starter jdpboom; Start date Jan 28, 2018; J. When I squeeze the fuel ball I can see fuel coming out inside the motor housing and running down to the bottom of the motor. - had it happen to my 2007. Sign in | Register. J. I also replaced the needle and (seat ) that the needle fits into . Fuel Sep 26, 2024 · Outboard Motors Forum. Evinrude has discontinued production of its 9. This leakage is due to exposure to water Stop using your outboard motor until the fuel chamber has been replaced. When trying to put fuel, the fuel overflows. Was out for a run on the boat yesterday, did out 50 miles then the engine stalled out. There is quite a bit of fuel mix ( the fuel that runs out is quite substantially oily) running out from the front of the carbs if I tilt the motor say when we get to a shallow area and switch off. Another common culprit is a clogged fuel filter or carburetor. Please contact a servicing Honda Marine dealer to make an appointment to have your BF15D, BFP15D, BF20D, or BFP20D outboard repaired. The fill hose to the fuel tank could be leaking. Pump the primer bulb in the fuel line Oct 21, 2013 · I have found it has become very heavy on fuel. jwbmarine Silver Medal Contributor. Thread starter Naxas; Start date Nov 6, 2013; N. If this happens, there will be a constant fluctuation in the fuel supply pumped into your boat’s carburetors. When fuel systems are the suspected culprit, the first thing to do is make sure there’s something in the tanks. Mar 7, 2025 · Outboard Motors Forum. Nissan NS5B two stroke leaks fuel when tilted Something, somewhere has for the fuel to leak when tilted. com does not offer troubleshooting assistance or repair advice by email or by telephone. moodyshield Member. The motor has very few hours, and looks brand new, but, I can't Mar 6, 2025 · Outboard motors archive 2000-2004 . Wrench: A wrench is necessary for tightening the fuel line connectors. Mar 7, 2025 · Please Note. Or could it still be the carb? ( fuel pump ) at a BRP Sludge in your outboard’s fuel is an engine killer, and constantly swapping out the fuel filter(s) could mean you’re just putting bandages on a larger fuel system problem. Aug 25, 2013 · When I was squeezing the bulb, I could hear the fuel going back into the gas tank on the boat. Any help would be appreciated. I pumped the fuel fill bulb till it was hard and the translucent fuel filter housing was completely full. I can't even tell where from this pump it is coming from. Step #1: Begin by carefully removing the top cowling, Then, remove the ignition coil cover at the rear of the motor. Customer: Im pretty sure i have an air leak in my fuel line on my 70 hp johnson. 2 days ago · OK, question here. The gas appears to be coming out the exhaust. Motor also ran really well before the bottom carby Mar 21, 2021 · My motors do not have those studs. Jul 18, 2011 · This is a Honda 90 4 stroke fuel injected engine. Johnson Evinrude Outboard Forum fuel leak problem. Jul 6, 2019 #4 If you run the carb dry, that will not happen. 20200907_134704. Thread starter Never died but lost power. They had a record-breaking $3. Any thoughts on what to do here? I changed the clamp, but today it still leaked when it warmed up from the sun. I'd suggest that if fuel's coming from there, then the problem is that the needle in the carb is stuck, or not fully closing due to 'something' interrupting the the seal from it; a bit of grit or whatever, and the carb is then flooding and leaking out from there. That it is designed to dump excess fuel rather than flood the motor. Fuel dripping out of lower unit. Common Fuel Hose Leaks. Primer Bulb Feels Soft or Mushy. Sitting in my driveway, the fuel was leaking at the input to the motor. Air leak in fuel line? Thread starter Nrkdn; Start date Oct 4, 2017; N. Upon relaxing pressure from the gas cap, the leak went away. Upon full tilt up my 2 stroke leaks gas b95 75hp i pumped fuel bulb when engine is down and have slight leak on lower cyl but if any leak when the motor is in it's normal position and you pump up the fuel bulb, do as Rollie says - at the very least your float is out of adjustment Jul 12, 2012 · Mercury outboards tend to leak fuel if the fuel lines are not disconnected after every use and the motor is tilted up in trailering position. I will attach a picture. Damaged fuel lines can impede fuel flow, mimicking the Mar 8, 2025 · Please Note. This could be due to a crack or hole in the bulb, which prevents proper fuel flow to the engine and causes fuel to leak out. Naxas New member. You say the leak is on the "right hand side" - is that the right hand side from the back of the motor (looking at the prop, which would be referred to as the "starboard" side) or is the leak on the port side. My spark are verry wet and my carb leak fuel. 3 portable mercur" I have a 3. S. Home. Be sure to lay the spark plugs in numbered order to reinsert or replace them after the test. The easiest way to do so is to look at the Jul 12, 2012 · Mercury outboards tend to leak fuel if the fuel lines are not disconnected after every use and the motor is tilted up in trailering position. I have a mercury optimax pro xs 250. Here are the symptoms: 1. A joint investigation by my dealer and the manufacturer was launched Page 1 INAL HTI N : TI-62002082 UMBER Honda Technical Information : 2002/10/24 ATE OF SSUE ATE OF EVISION : BF15D / BF20D ODEL EFERENCE UBJECT HEN IN ULLY OSITION YMPTOM ARKET REATMENT Fuel may leak slightly out of the outboard motor under; Page 2 ANNEX HTI N : TI-62002082 UMBER : 2002/10/24 ATE OF SSUE Honda Technical Aug 14, 2024 · A-Premium Electric Fuel Pump Module Assembly with Sending Unit Compatible with Nissan Frontier 2005-2019, Pathfinder 2005-2012, Xterra 2005-2015 & Suzuki Equator 2009-2012, 2. It smells like gas. Apr 11, 2016 · A blocked outboard fuel line prevents fuel from getting to the motor. Performing the Leak Down Test. 18 Apr 2014 #5 In the end it turns out that fuel is pi**ing out from the tank cap when the motor is leaned over with a decent amount of fuel in it. Any clue what this is? The engine will only run about 3500 rpm and it felt like a plug was missing fire so I changed the plugs and the fuel filter. Mar 29, 2014 #1 Hey guys got a question about a problem I have been having with my ob motor, my issue is that on occasion my motor is leaking oil/fuel, i cant seem to pin point 3 days ago · Here are some safety tips for using outboard motors. Must be fuel line leak between fuel pump and exterior part of fuel line. Think of a teacup turned to a 45 degree angle. snipert88 New member. The 6 days ago · Outboard Motors Forum. If the o-ring is cracked or worn, fuel can leak from the connector or air can enter the fuel system. Steven, the first place to check is the fuel line connector to the engine, where it clicks on. Aug 21, 2016 #1 Folks, You have been so helpful in the past, so here we go again. Anyone has already have the Sep 6, 2011 · Re: how to check for a bad fuel pump, or an air leak? does primer bulb stay hard,until you start it? if bulb stays hard 4-5 minutes,then its safe to say no air leak. If you find oil in the exhaust manifolds, most likely the valve covers are the cause of the leak. 8 hours ago · After issues with my 2019 newly delivered Mercury Verado V8 250hp outboards leaking oil, crankshaft oil-seal replacement and finally one complete block being replaced under warranty, a sheen of fuel can be seen on the water. No alarms. The fuel line snakes between the block and the intake Mar 4, 2025 · Please Note. If not, run your bowls dry after running the motor by Apr 10, 2016 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Step #2: Remove the spark plugs. Please use only non oxygenated fuel in your motor. fallguy, Nov 6, 2021 #2. 2016 Suzuki DF15A - Leaking Gasoline I'm dealing with a gasoline leak. Thanks for your help any way. Gas and diesel marine mechanic. If your Yamaha outboard is facing reduced performance, fuel inefficiency, or other problems, it's time to do a leak down test. THE ORIGINAL LINE HAD A PLASTIC TIE ON IT. However, if it doesn't leak fuel, it's not leaking. Covers topics from fuel hose materials and bend radius to maintenance and safety tips. Jun 22, 2011 · I have a 50hp that has fuel leaking from the 'electric primer' out the fogging shaft (choke) when I push in the key to apply fuel to the motor for starting. Others can be gasoline or injected engines. The outboard fuel pump has a sensitive diaphragm that receives a suction signal from a piston cylinder so the pump can deliver fuel. Why Is Fuel leaking from the seal ? Jan 12, 2010 · Picking up where we left off yesterday, troubleshooting a modern outboard may mean plugging in a laptop – but if you’re stranded out on the water, check the basics and you might solve the problem long enough to get home. Honda Outboard Forum . Gas and diesel Next, locate the current fuel pump on your Mercury outboard motor. In storage, it leaks fuel from "somewhere in carb system". toddjo New member. Nissan Tohatsu Outboard Forum . Fuel pump or air leak in gas line. The tank is steel, with the Evinrude logo and barrel type fuel gauge. All is a bit of a mystery. When it comes to maintaining your outboard motor, understanding the basics of fuel line connectors is crucial for a smooth operation. 5 days ago · Outboard Motors Forum. gas pouring from carb overflow The fuel pump develops 4 to 6 psi where you can pump the bulb and generate 15 psi! If it doesn't leak gas when it's running, just take it easy when you cold start it. A air leak will also, by its nature, be a fuel leak think about it. Here are the best and quickest ways to troubleshoot and resolve this issue! What Are The Symptoms of An Air Leak? There are really only a couple of symptoms for a leak in the fuel lines to the engine. Step #3: Remove the flywheel cover from the top of the motor. Fuel Line Clamps: Use clamps to secure the fuel line to the connectors, ensuring a tight fit. Whether you’re a seasoned boater or a first-timer, understanding the proper techniques for fuel line connection is essential. But mine do all have crankcase puddle drains, which drip. There is no gas inside the lower cowling. He said this motor sometimes leaks from the throttle. pvanv Outstanding Contributor. then i would say fuel pump. If you suspect that you have a fuel leak, you should immediately stop using your Mar 4, 2017 · what may be the issue with VST vapor separator fuel leak when engine is running. So, when the key is turned on the fuel rail pressure is as high as it is supposed to ever be. Finding a Vacuum Leak in an Outboard Motor; 1 So this is your sort of fuel to air ratio that motor needs to run properly. Hope this helps you or someone else. We will include all the sympt Dec 15, 2023 · By recognizing the symptoms and taking prompt action, you can diagnose and fix an air leak in your outboard fuel line before it turns your boating adventure into a frustrating ordeal. Sep 18, 2010 #1 Oct 31, 2021 · I just recently bought a 1954 Johnson RD-15 25hp, which I now have in running condition. It only leaks/squirts when you push the key in Mar 5, 2025 · Hi Forum, I have an elderly 2 stroke 2 hp Mariner - it's not been used for years. The fuel pump section Aug 30, 2021 · Hello to all! This is my first time posting on this forum, ive been scratching my head trying to figure out where my possible “leak” is coming from. Jun 4, 2023 · When it comes to outboard motors, the phrase “out of sight, out of mind” can often apply. The fuel pump may have a leaking gasket that is visible only with the engine running. Let me tell you. daveio New member. Eventually traced leak to the rubber fuel Apr 23, 2012 · When you say the connector barb do you mean the plug that hooks to the motor? If that's what you are talking about it may not be fully connected. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. In If you smell fuel on your boat. Dec 11, 2008 Mar 7, 2025 · 1999 Mercury/Force 75HP leaks fuel from all carbs. Thread starter but if it doesnt pump up hard then the needles in your carbs arent sealing or a fuel leak is present somewhere else. Thread starter Snapper Fisho; Start date Nov 22, 2020; Prev. and yes if its leaking fuel just sitting it will suck air and cause problems when the motor Apr 18, 2022 · Here’s The Answer To What Problems Can Occur With Inboard/Outboard Motors: While problems with inboard/outboard motors are rare, there are certain preventative measures that you can take to help avoid issues. I have worked on your style motors, but a long time ago. I fear I am setting myself up for an environmental citation. Been trying to figure out what this is called and how to So what causes fuel to leak from the back and center of a carb? Most often its the float ball needle valve. This small hole, located at the bottom Oil Leaking from Lower Unit Weep Hole: Causes, Solutions & Prevention Read More » Oct 19, 2024 · Fuel Line Connectors: These connectors are essential for creating a secure and leak-proof connection between the fuel line and the outboard motor. That means putting in small amounts of fuel at once. Aug 4, 2021 · Was having an issue with the port side midsection of my motor leaking fuel. After I prime the bulb and it is solid, the engine starts and runs. Thread starter Took 2 gallon tank with approx 30%- 40% Sea Foam, ran it into motor, motor starts fast, noted fuel leak, could have been there from beginning to some degree. Fuel leaks from small vent just above fuel bowl and from the carb throats. i ran another test the other day, i took fuel line off from pumps to carbs and ran a volume test. Go. It was only running for 1 Aug 13, 2024 · Learn how to choose, install, maintain, and repair your outboard motor's fuel hose to ensure safe and efficient operation. Outboard Fuel Line Connector Basics. Always wear a life jacket when operating a boat with an outboard motor. Is this fuel leak likely associated with a low end bug with float bowls? Feb 17, 2025 · Outboard Motors Forum. Mar 7, 2025 · You've probably got the float set properly but redo it as follows. 6 days ago · Squeeze bulbs on outboard motor fuel hoses prime empty fuel lines so that the outboard engine’s integral fuel pumping system, which only works with liquid, can pull the fuel from the fuel tank to the engine. Feb 19, 2023 the fuel leak on the video below is what I’m not to sure about the fuel is coming out the left back hose that goes to the vacuum (I think) to make the pump work Jul 31, 2023 · I had the boat out of the water last week and ran the engine on muffs several times but no leak was present of course. DF4 fuel leak 10-01-2018, 05:11 PM. As robust as these motors are, · And why replace that one section of hose? Did it leak? The section you replaced from ”fuel filter to bulb”, are we talking fuel filter on motor, or fuel/ water separator filter to bulb? If one section leaked fuel, maybe some of the other sections will leak air, and make you need to pump bulb after stopping to fish? Post back when able. I own a Mariner 3. Hand-tighten the connector until it is Sep 7, 2020 · I fired it up and it runs nicely but there is a leak from the fuel pump. it would leak fuel. I don't think it is the carburetor ? cause it doesn't leak until the engine is turning over and you try to start it. Some might be petrol engines or diesel engines. I checked the fuel line from the tank to the engine and everything checked out. Other Outboard Manufacturers. In this blog post, we’ll explore common problems associated with Mercury 2-stroke outboard engines and provide detailed, Jul 25, 2022 · There could be a leak from the fuel sender or pick-ups on the fuel tank which are leaking fuel when the tank is full. This often occurs when a fuel line leak causes pressure to drop. Evinrude 70 fuel leak? Thread starter Nick0151; Start date Feb 19, 2023; N. Mar 13, 2008 · i have a 15hp evinrude and when you pump primer bulb fuel spills out of fitting at outboard, put a new fitting on line and same results, i guess it has to be the fitting on outboard what do i need to do to fix and how much trouble will it be make sure the small black o-ring is in place on the fuel inlet shaft of the motor. Because it takes forever to refill just 1 gallon. tvd New member. 1. Haveremoved and cleaned carbs, replaced all needles and in fact bought new bottomcarb. Remember, a little preventative Jan 12, 2010 · If you verify the presence of fuel but still can’t get the motor running, you need to make sure that the juice is getting to the motor. Most engines have drains on carbs and they can leak easily. It may have been because of the compression though. 2004 Mercury 25 hp oil leak. I suspect the diaphragm at the enrichment valve due to the proximity of the leak. 3. Uncle Buck New member. HOWEVER, it is NOT oil. is it the float or is it the low fuel assymbly. Jason. If the motor has never had the carb cleaned I would just remove it and rebuild it WITH a complete Mercury Kit be careful the check ball and spring are very small and Apr 19, 2023 · Discover the Symptoms of a Bad Primer Bulb on an Outboard Motor, along with causes, diagnosis, fixes, and maintenance tips for optimal engine performance. 50 HP 2 stroke Gas Leak. And this is most likely caused by the ethanol content of the gas. (Less than 30-60 seconds)it starts pouring fuel out of the starboard side from a small hose right at the cowling latch handle. If the cylinder has a leak, the pump pulse signal will not be strong enough to send the Jul 12, 2003 · I bought a new Quicksilver fuel hose for my 71' 9. Mercury 40 fuel leak from carb. Jan 28, 2018 #1 Ok. Post reply Share: Feb 4, 2022 · Fuel Line Air Leak Another possible reason your outboard motor struggles to reach full speed is an air leak in your boat’s fuel line. The boat seems to refuse to take fuel. If the leak is small, you can fix it with a Mar 7, 2025 · Outboard Motors Forum. Below is a picture of the Mar 7, 2025 · Outboard Motors Forum. Thread starter daveio; Start date May 13, 2009; D. 9 and it fit much better at the tank. Dveres95 New member. It fits nice on the engine, but leaks at the tank fitting, when I prime it. The problem is shortly after starting motor. Info: Carb part 1382-6425 s/n Questions. Using gasoline that is more than 10% Apr 24, 2017 · 1941 Neptune Fuel Tank Leak Home › Forum › Ask A Member › 1941 Neptune Fuel Tank Leak This topic has 2 replies, 3 voices, and was last updated 7 years, 10 months ago by ko4nrbs . Home › › Jun 24, 2021 · The fuel used for your outboard motor can be one of the primary reasons why your outboard motor is bogging down. It needs squeezing fuel in small amounts to refill. If it is, make I have a 2006 f250txr motor starts and runs perfect. Mar 4, 2025 · Those fuel connectors, especially at the fuel tank always appear loose. With clean fuel in the tank, good supply through the fuel filter and past any isolation tap and delivery of said fuel to the carburettor further starting or running problems due to fuel will be down to the carburettor. 2 days ago · Hello. Contaminated 2 stroke outboard fuel with numerous rust particles. The motor will run fine up to about 50% throttle. This didn't seem possible but it happened. i have check fuel pump (OK), carb float ( Ok ). If the primer bulb feels soft Either the lift pump has failed, the boat is out of fuel or there is an air leak or blockage somewhere in the fuel lines running fuel from the tank to the engine. Feb 8, 2025 · Outboard Motors Forum. May 30, 2023 · Mercury 2-stroke outboard motors are highly regarded in the boating world for their reliability, performance, and efficiency. Nick0151 Regular Contributor. I have a 1990 75hp mercury outboard motor that is leaking fuel from the throat of the lower carburettor Aug 15, 2024 · From types and materials to installation and maintenance, get the facts on outboard fuel line connectors and avoid common mistakes. now it's a performance question. 1; 2; First Prev 2 of 2 Go to page. " Reply. I have a Yamaha 85 aet pre mix power trim motor. Feb 26, 2025 · Outboard Motors Forum. Apr 12, 2002 #1 " I have a 3. Time to remove it ;o) Dirty or Defective Carburettors 4 days ago · The two- or four-stroke engine -- depending on which year it was built -- causes few problems, but issues with the fuel system will be encountered on occasion. Identify the fuel inlet on the outboard motor. Boat Engine Parts Outboard Motor Parts Outboard Motors Forum. MarineEngine. If you run wide open it will die after 1 or two minutes. instead, it will continue to be soft. Occasional loss of power. The fuel fill bulb was soft. '98 115hp 2stroke Oil leak from spark plugs 04-10-2016, 01:41 PM. I have a 2006 mercury optimax outboard motor 90hp, it cuts out after throttle up and then shuts down. Thread Initially it was a air/fuel leak question. Mar 6, 2019 · That appears to be the gasket from where the carb sits in position on the inlet manifold. A fuel hose leak can be a frustrating and potentially costly problem for any vehicle or equipment owner. Mar 6, 2025 · Outboard Motors Forum. But upon inspection there appears to be a leak from the fuel pump on the starboard side of the motor. Replacing the fuel line of an outboard Sep 12, 2014 · It is a check valve which, if it is working correctly, should prevent fuel from running back into the tank. Please! Take care and good Mar 3, 2025 · Outboard Motors Forum. It has destroyed more outboard motors than you can ever imagine. Fuel Spillage/Fuel Backing Up. The fuel is leak from the carb butterfly. Tried to start it back up and fuel was coming out of the silencer Cover in the front of the outboard. Followed hose up from leak and found its the over flow hose that connects to top of craburator. The dealer will replace the fuel chamber, free of Nov 5, 2016 · All symptoms are occasional which is making this a tough one! The dealer changed the two in motor fuel filters. 6 billion in sales in 2022 alone, and their reliability and versatility will likely maintain these numbers. will start and run perfect anywhere from 10 seconds to 1 minute if it has sat for at. Home › › May 31, 2006 · Yesterday I noticed a small fuel leak which appears to be coming from the bottom carb near the enrichment valve. Most of the fuel parts are on the starboard side of the engine, fuel pumps(if an F150) are on the rear. You are invited to join our public Boat Repair Forum to seek assistance from other members. 0L May 25, 2022 · Thoughts from the video? Fuel gets wiped up and then accumulates within 10-30 seconds in the intake of carburetor. Feb 5, 2009 · Outboard motors are manufactured through different methods, and thus each engine tends to be unique. jdpboom New member. Nrkdn Member. then taking steps to address the problem and put the boat back into operation. Mar 8, 2025 · Mike, unfortunately I am on dial-up service so can't watch your video (don't want to spend 2 hours downloading). Jul 4, 2019 · Outboard Motors Forum. 2004 Mercury 40hp EPO fuel/oil leak. This has to be a common issue since they design the fuel line to Jun 6, 2020 · Check for fuel leaking at mechanical fuel pump. Feb 23, 2025 · Another quite impressive thing about the Mercury 50 HP 4-stroke outboard is its fuel efficiency. it drain a bottle of gas for abut 5 mins of engine running. It only happens when the boat sits unused for a week or two. I pressure tested the tank it's mixing with the water. Somewhere between the engine and the fuel tank. first from the left (facing boat), second from the right and the third just to show runs the fuel runs off and down the motor Customer: My fuel line is leaking fuel at the motor connection. Oil level is not rising and no gas smell in oil. took it on lake and noticed after driving for a while fuel leaking from under motor. Df 50 Oct 14, 2024 · 2. Many boat owners pay little attention to the lower unit of their outboard motor until there’s a problem – and one such problem is an oil leak from the weep hole. Brought it home and it will run for about 45 secs before it shifts off and starts to spew fuel . Thread starter tvd; Start date Sep 18, 2010; T. The leaks are between the float bowl and body, next to the plunger. I had a mechanic replace the needle assembly and the float assembly this week. The symptom is fuel dripping from under the front engine control plate. Last time I disconnected it gas sprayed out like the bearing inside the fuel side was stuck. DANIEL I HAD A SIMILAR PROBLEM ENDED UP I HAD A LEAKING FUEL LINE. I checked on the parts and have ordered them, an o-ring, 2 fuel line straps, and the solenoid cover gasket. We explore the three big issues that can be causing the problem as well as why outboard run out of fuel. When I looked at the water it was every where. Most inboard and outboard motors can be traced to problems with a lower unit, electric shift, fuel, or carburetor systems. After pressurizing bulb fuel will leak in the down or trimmed upposition. The motor runs great and fuel consumption seems to be same as always. Keep a fire extinguisher on board. Locate the Fuel Inlet on the Outboard. Accidents can happen unexpectedly. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. There are several methods to troubleshooting a stalling outboard engine. At home, I removed the engine cowling and found the translucent fuel filter housing on the back of the engine. Don’t laugh, even the best of Oct 21, 2013 · Looking for advice please. Outboard motors can catch fire, especially if there's a fuel leak. that Jan 31, 2025 · Outboard Motors Forum. if you have steady stream and about a cup of gas while running5-6 seconds. Jeff . It only leaks after the motor is run and tilted up. Elgin Fuel Leak. The symptoms of air leaks in the fuel line mainly depend on the type of outboard engine. I was told this was an overflow hose for the vst. Pressure fuel tank leak. 4 days ago · Fuel should never leak out if the carb and into the engine compartment. My Mid 1950's double hose fuel pressure tank holds pressure Sep 15, 2024 · Connecting the fuel line to your outboard motor is a crucial step in ensuring your boat runs smoothly and efficiently. Jun 17, 2012 #1 Hi All Looking for Some Sound advice Please. (Carburetor Float Setting)(J. from the motor. Thread starter bob; Start date Apr 12, 2002; B. Pull the top cover, put it on muffs and crank it up (if no fuel run off is visible) . Thanks to its 4-stroke engine, this outboard can run for up to 1 hour on a single gas tank. Leaking from the bottom carb on the port side. When I went to test run the motor again it was still leaking fuel. jpg 5 days ago · Outboard Motors Forum. Fuel is leaking at the connection from the fuel line fuel joint (female) connector to the motor (male) connector. - check that oil level is not increasing with gas - the gas can then find its way down to prop area and show up as sheen in water. Shut off the fuel if possible and locate the leak. - fuel can leak into oil sump via a leak in diaphragm - easy to repair. I have checked all the gas lines and fuel tank (2019 Landau tritoon) but no leaks there. Johnson Evinrude Outboard Forum The primer was going hard and no fuel line leaks but once motor runs it begins to drip fuel from the bottom carby and just stalls. Thread starter TiEnv If it's just kinda "goopy" oil residue it could be coming from a fuel leak (gas evaporates and leaves the oil behind), a disconnected bleed line, bad carb gasket, bad intake transfer cover gasket, bad powerhead base gasket, bad upper or Mar 5, 2025 · Re: johnson 150 ocean runner fuel pouring out of front of carburetors Maybe the red lever is turned and in the " manual on position " -----Fuel pouring out the carburetors usually means stuck needle and seat ( float valve ) and requires cleaning / replacement. Thread starter toddjo; Start date Aug 21, 2016; T. It seems like the fuel is coming out of the exhaust. The fuel pump is typically located near the engine, and you may need to consult the owner’s manual or a diagram for precise instructions. Fuel line air leak ANALYSIS. Sometimes you have to push Jul 31, 2023 · DF25A is a 4 stroke. Mar 5, 2025 · Outboard Motors Forum. Feb 15, 2025 · Outboard Motors Forum. Suzuki Outboard Forum . In this comprehensive guide, we’ll walk you through the step-by-step process, providing clear instructions and helpful · Elgin Fuel Leak. 3 portable mercury enngine that I just replaced the inlet needle. has recently been gas pig. They are effective only up to a certain distance and height with respect to the fuel tank level because the displacement and elasticity Apr 19, 2023 · Mercury Marine is a well-known manufacturer of marine engines and parts, including the Mercury 90HP 4-stroke outboard motor. Checking for air leak in fuel lines. May 6, 2010 #8 OK it Apr 23, 2012 · Re: fuel leaking out of connector barb? All of the fuel connectors have a O ring to seal the fittings off and also a vavle built into them to shut off the fuel, and the ones shown and mercury fittings, and they do wear and replacments can be picked up at wal-mart of many other places. so I'll take your word over my amateur experience. May 13, 2009 #1 Mercury 40 fuel leak from carb. When the fuel tank is leaking there could be other issues that will need to · 2006 f150txr , replaced vst filter , bowl filter , filter above the vst and filter on the rear of the motor . Thread starter toddjo Pressure fuel tank leak. Honda 2hp fuel leak. Mar 29, 2023 · Outboard Motors Forum. It is typically located on the carburetor or fuel pump. Fuel Leak at Fuel Joint 04-17-2010, 06:08 PM. This can damage the propeller and cooling Mar 2, 2025 · Outboard Motor Parts I have also been told that a bent pushrod can cause the problem, as well. what makes fuel pump leak out overflow on 2006 mercury bigfoot. You should check four main areas when investigating fuel system problems: gas tank, fuel line, carburetor and fuel pump. Pal Fuel Leak. There is quite a bit of fuel mix ( the fuel that runs out is quite substantially oily) running out from the front of the carbs if I tilt the Mar 7, 2025 · In general these carbs do leak (old Tillotson's), but yours sounds to be leaking excessively. Reply. Johnson V4 115HP Outboard leaking fuel from the bottom carby Johnson V4 115HP Outboard leaking fuel from the bottom carby. . Mar 22, 2012 · I have noticed that when I trim my motor up completly or even most of the way some gas seems to leak out of the motor onto the rear splash pan, I have not found any bad hoses so I am imagining it is something in the carbs, I did replace a missing gasket on one last year but this problem still continues. 2 strokes are designated “DT”. But how? Skip to content. Honda Bf50 Carb Fuel Leak from Seal ? Thread starter Uncle Buck; Start date Jun 17, 2012; U. It just might be a small leak that Jul 23, 2022 · What Are the Symptoms Of A Bad Primer Bulb On An Outboard Motor? When the engine is cold-started, the priming bulb in the fuel line connecting the fuel tank and the engine is used to fill the engine with fuel. While this motor is generally reliable and provides excellent performance, there are a few common issues that owners may experience. I pulled to shore and noticed a small gas slick. I was not totally correct in that it leaks from the idle port when the switch is in the on position or the motor is running - if the switch is in the on position but the motor is not running you see a small dispursement in the water. Mercury Mariner Outboard Forum . Before the motor is started the intake manifold pressure is as high as it ever will be. Eventually traced leak to the rubber fuel hose from the fuel tank. Double-check that all 2 days ago · Outboard Motors Forum. Apr 28, 2017 · Pal Fuel Leak. It's definitely not a leaking float Jun 26, 2020 · There's no fuel lines down that low. Avoid running the motor in shallow water. I keep up with recommended routine maintenance and change the fuel/water separator routinely. 5L 4. That is Jul 23, 2022 · 1. Besides sludge, fuel filters can also get punctured and clogged by metallic fragments from deteriorating fuel tanks, which could be depositing contaminants into the fuel Nov 10, 2023 · Which also indicates a leak in the fuel line of your outboard. Reeves) With the carburetor body held upside down, the float being viewed from the side, adjust the float so that the free end of the Feb 15, 2025 · Outboard Motors Forum. Thread starter I found the fuel leak it was t I found the fuel leak it was the fuel cooler tank. Dec 6, 2021 · The outboard´s fuel system begins with the fuel line, a hose that connects the outboard to the boat´s fuel system. opened bowl drains, restarted, still leaking from Mar 5, 2025 · Please Note. Went around to the back of the engine and pulled the top off it. Ensure they are securely attached and free of cracks. While the outboard is running if I disconnect the fuel line going into the outboard it stops spilling out Oct 9, 2012 · Has anyone had any fuel leak problems with the new twist lock fuel line fittings? My 6 gallon portable tank leaks where the fuel line connects to the fuel tank. It is between the gas tank and the engine. Symptom 2: Primer Bulb Doesn Customer: Fuel leak Mercury Outboard Mechanic's Assistant: Sometimes boat issues seem like they'll be really complicated, but end up being easy to fix. You might be wondering where the primer bulb is located. It generally starts with a partial blockage, where playing around with the fuel hose and pumping the primer bulb will get the motor to start or keep it running. The problem is (even before replacing the pump) that starts leaking a lot of fuel through the lower cowl on the right side in front of the trim assembly. B. M. I get up on plane and motor shuts down to idle after running for 30 sec-1 minute. I have also seen a fuel leak at the injector leak past the injector and into the cylinder. Dec 19, 2005 #1 Honda 2hp fuel leak. 5 Johnson. Feb 8, 2025 · Burnt/unburnt fuel/oil go out through the exhaust housing (leg) and most exits through the prop (the thru-hub exhaust). Thread starter prassel Check each fuel hose and connection for a leak. The connection Mar 5, 2025 · Fuel pumps on outboard motors work a little bit differently than they do on automobile engines. - also smells. The air motor. Renewed hose and no more leaks. I am not used to having to remove the fuel Oct 24, 2007 · Check the fuel tap and pipe before you strip the carb. Align the fuel line connector with the fuel inlet. it looks like oil leaking down the midsection. It is embarrassing. Sep 1, 2014 · Outboard Motors Forum. If the leak is along the fuel hose, repair it before using the boat. Thread starter Joe Ziehl; Start date Dec 19, 2005; J. Nov 6, 2013 #1 Hello all, I have a 1986 Johnson outboard 70 HP VRO. As a result, you will experience your outboard motor’s RPM fluctuating up and down. Feb 17, 2025 · Outboard Motors Forum. I just replaced the lower pressure pump and its starting and running fine. A few Questons Please. -----Strange that all six would be bad -----so check that primer ( block it off if you have to ) for a test. Johnson Evinrude Outboard Forum . Jan 31, 2016 · DF70 Fuel Leak/Spilling 01-31-2016, 04:54 PM. However, there are a few central locations of all engines that are prone to oil leaks - here's where to look. The symptoms of a bad fuel pump on an outboard motor include failing to start or maintain idle, losing power when throttling up, increased May 14, 2024 · As an avid boater, you're likely aware of the popularity of outboard motors. The hose end of a "quick disconnect" connector includes an o-ring. Carb fuel leak. Connect the Fuel Line to the Outboard. Rich mixture and Fuel leaking from carb 60Hp Mercury 1997 i have a problem with my 1997 mercury outboard 60 hp 3 cycl. Oct 3, 2018 · I have been experiencing an intermittent fuel leak with my 2005 Yamaha F225. I talked with a service tech who is familiar with the Yamaha. I just wonder what they did for puddle drains on yours–if anything. If there is fuel in the bilge, the fuel is probably coming from the fuel tank. You may have to register before you can post: click the register link above to proceed. Thread starter model J90VLSS that runs great BUT when I return to the ramp and raise the motor fuel and oil leak from under the engine cover onto the mounting bracket and upper shaft unit. Strangely motor has been running fantastic at high rpm and idling fine for so many years up until the bottom carby leak but was harder to start in the Oct 24, 2007 · I own a Mariner 3. · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Honda bf90 leaking fuel from carb vent. Nov 3, 2016 · If I tried to push the throttle, the engine would sputter. it wasn't Jun 18, 2013 · The fuel chamber may crack and leak fuel. David . When you pump the ball on gas line fuel pours Oct 4, 2017 · Outboard Motors Forum. Gas leaking from propeller the propeller when engine starts or even just turned over. the oil levels are absolutely perfect. 3 and had a fuel leak last year, outboard is about 5 years old. 1990 Johnson GT 150 Carb Leaking. Oct 4, 2017 #1 I have a 1998 90HP Johnson Outboard. I am not used to having to remove the fuel line at the motor connection to prevent this because I have never had an outboard that did this before. Understanding the type of leak we have will be crucial in determining what exactly our alternatives are. bob Member. I'm concered about a fire hazard. Joe Ziehl Guest. 50HP 4 stroke merc leaking gas. Menu. I have rebuilt these twice, and used a new gasket kit the last time. Motor 6 days ago · Outboard Motors Forum. Contact our Parts Experts: 1-888-352-1312 | 1-239-367-0049 | Hablamos Español Contact Us. Thread starter bob; Start date Apr 12 Carb fuel leak. To start viewing messages, select the forum that you want to visit from the selection below. However, like any mechanical device, they can occasionally encounter issues and require troubleshooting. I initially saw it leaking under the onboard tank so tightened up the hoses coming out of it. If the carburetor wasn't well sealed against the crank case for example. 9hp outboard. Eveinrude 150 Ocean Pro - Fuel Leak at Carb - SS Ball Fell Out! . Based on the Serial number does anyone know the exact year and spec? See attached spec sheet 2. I was using my neighbor's hose off his 9. xmdxk ltjkc mjfb zxusjmhy wavji qgp whggmx ixgoncx eovf ehy vjf bvwf mmhr cpu bwcfkmx