Mercury outboard carburetor leaking gas The leaks are between the float bowl and body, next to the plunger. I was assuming that this was just the point that it found its way. Same thing. Carb Dec 19, 2019 · Been having all kinds of trouble trying to stop gas from coming out the front of the bottom carb. Tested on the water and Aug 4, 2017 · When your outboard is overflowing fuel or just getting too much, the problem is your fuel needle and seat not sealing. I have a 2018 mercury 15hp 4 stroke outboard. I have A 2010 Mercury 15hp four stroke, it is leaking fuel out the overflow Gas and diesel marine mechanic. took it on lake and noticed after driving for a while fuel leaking from under motor. Don't leave your engine tilted up longer than is necessary to support your fun in the sun. The leak is only present when the bulb is primed. Pressing on the little gas pin where the gas line connects to the motor added the necessary pressure in the system to send the gas from the filter into the carb. Replacing the assembly is over $500, but replacing the o-rings takes about hal Jul 26, 2013 · 1999 Mercury/Force 75HP leaks fuel from all carbs. Any suggestions on how to approach fixing the issue would be greatly appreciated. Two small o rings inside but no other gasket, Mechanic's Assistant: Sometimes boat issues seem like they'll be really complicated, but end up being easy to fix. Apr 9, 2013 · I'm trying to troubleshoot an issue I'm having with my 2001 25hp 2 stroke Mercury. Just brought it home NEW last night, lund with 40hp 4 stroke efi . Aug 30, 2009 · My 1998 4-stroke mercury 9. Mar 22, 2012 · Carbs have a venturi jet in the carb air intake whereby the "wind" going by sucks fuel up from the carb bowl. | Fuel System RepairWebsite to find your parts - https://www. The welch plugs were Jul 12, 2021 · Early 80s 40 hp. It is just pumping out when starting/running. Jul 30, 2014 · Actually that is not true, it ran fine until it ran out of gas that was still present in the carburetor and there was no pressure to get the gas from the filter into the carb. Apr 9, 2013 · Just bought a duck boat for me and my sons. I put the carb on the bench and hooked it up to a 3-4 psi electric fuel pump. 9 hp outboard leaks fuel from the carburetor. Followed hose up from leak and found its the over flow hose that connects to top of craburator. HTH, Mark Mar 11, 2024 · Hi All, Working on a Mercury 20 Outboard for a friend. 5 mercury, tillotson carb) has sat for 8 years. 1. After pressurizing bulb fuel will leak in the down or trimmed upposition. ?? Jul 12, 2012 · Re: Why do Mercury outboards leak fuel? I hope the oring in the brand new gas line disconnect isn't bad. I took the carbs off and cleaned the bowl and pin but while I had the carbs off I pumped the fuel ball and gas comes out of the engine at the botton carb hole. Rebuilt the carb and now float valve is closing properly and no gas leaking from the overflows. In this video, I demonstrate how to fix a carb that keeps leaking after rebuild!Thank you for watching. Finally had enough and bought a brand new carb from a merc dealer. Model #35524 Just finished a rebuild of the carburetor, using Johnson/Evinrude carb kit 439074. Serial # 7207752 Canadian made. May 25, 2022 · Fuel gets wiped up and then accumulates within 10-30 seconds in the intake of carburetor. 9 hp mercury four stroke carburetor leaks gas on bottom from the accelerator pump cover. 9HP 4-Stroke carburetor using a Mercury carb kit, including new float, needle valve, float gasket, inlet filter, O-rings, and upper gasket. Based on the Serial number does anyone know the exact year and spec? See attached spec sheet. When you pump the ball on gas line fuel pours Jun 17, 2010 · Re: Mercury Classic 50 lower carburetor leak You could have one or several problems. Carb was originally leaking out the overflows. It starts OK but leaks fuel badly from a hole in the middle carb - see photo. Motor starts & runs great. Thank God for trolling motors! But I’ve replaced the needle valve with a kit and it started to spray gas out of the float cap and poor out of the mouth of the carb. The 50 horse is a 1985-86 and the 25XD is a 1984. It would leak bad if it the upper hose between the upper carb and it were cracked. I rebuilt the carb twice, the lines and filter replaced, rebuilt fuel pump, changed the float angle/bent the tab for the needle valve. Simple solution. To test is remove the bottom fuel line and push key in, it should click and dump fuel. When running and when primed with a bulb the leak occurs at the top of the carb. Jul 2, 2012 · Re: Mercury 90 fuel leak The choke solenoid is an enricher valve. You have leakage. Haveremoved and cleaned carbs, replaced all needles and in fact bought new bottomcarb. mercurymarine. I got her running and had fuel dumping out the front of the carb while it was running. Doing Follow along as I figure out my fuel system issue on my Mercury outboard. If I prime it while the motor is down it fills the bowl like it should and the the bulb gets hard Mercury 50 Hp outboard with leaking fuelWe have gotten away from working on a lot of the older mercury outboards since many come in with all sorts of electri Jun 18, 2023 · Got a fuel leak on your Mercury outboard? It could be the fuel cooler o-rings. With the fuel pump running it did not leak any fuel at all. and yes if its leaking fuel just sitting it will suck air and cause problems when the motor is running. Please subscribe and share my work! Material Links:Se Oct 24, 2007 · Just fixed my leak on a Honda 2hp(watercooled leg type) bought a carb. seal kit, renewed seal in tap; still leaked from screw that holds float chamber bowl on so stripped carb, cleaned up rusty bowl, new gasket and fibre washer - not leaking but the exhaust has blown a hole in the top of the leg where the exhaust pipe joins it. Fuel leaks from small vent just above fuel bowl and from the carb throats. When I trim the motor up and out of the water (with the engine off), a gas/oil mix drips out of the engine and into the transom of the boat. The click you hear is the valve being opened and gas being fed from the top carb to the cylinders. So I took the cowl off and observed the carb while I cranked it up in the driveway. You have a carb full of fuel, a venturi jet below the level of the fuel in the carb and wala. Here's a Force outboard and a simple c Nov 22, 2021 · I have an 87 Mercury 35 hp outboard and it ran strong then my last outing it died at full throttle. When tilted fuel runs out of the carb throat. I believe that it may be from a fuel line or carburetor but did not have time to look at it too excessively, as I was getting in truck to head to work and smelled the fuel in the shop. Apr 23, 2012 · 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. Do you know when the carbs were last rebuilt? Another problem and I've seen it a few times, is a broken reed valve. Customer: I have a 90hp mercury outboard and it is leaking gas out of the botton carb. I have a small amount of the fuel/oil mix coming out from the front of the cowl when I pump up the bulb in the morning or tilt the outboard up. Is your Mercury outboard motor leaking fuel? In this video I show you a very common source of fuel leakage in these motors and how to fix it. I replaced the needle, float, gaskets and got everything running fine. Sep 9, 2008 · Customer: 2008 9. 2. Carb was torn all the way down to a bare shell, soaked on carb cleaner overnight, and then cleaned with spray cleaner and compressed air. Is this fuel leak likely associated with a low end bug with float bowls? Two of the 3 carburetors are leaking gas on my 40ELPT, 4S, outboard (2000 year) motor. Questions. . com/en/u I have a 40 HP Force that is leaking fuel. (most likely). May 13, 2009 · "I just tried to start my moto "I just tried to start my motor after a few months of storage on the boat in my garage. The carburetor leaks gas from the top vent when primed and sometimes not, but when installed onto motor intake, then it leaks. Nov 6, 2021 · If you have fuel leaking out of the carb from a point above the bowl, especially when you pump prime, you likely have a float or seat issue. I think the pressure is built up in the gas tank because of the hot weather we have had lately so I unscrew the gas cap to relieve it. If I pump the primer bulb with the motor tilted it pours out. Apr 29, 2004 · The Boating Forum - Mercury Outboard Leaks Gas when Trimmed Up - I have just taken delivery of a Key West 1720CC with a 90HP Mercury Outboard. The motor (1981, 7. I know some fuel dripping is "normal". In this video we May 10, 2017 · PROBLEM: I noticed there was always gas below the carb, and often times I would see gas on the water when I was attempting to start the motor. As fuel fills the bowl, it causes the float to rise and seal off the valve, shutting off fuel flow. The float could be sticking in that carb which would not let the needle seat and stop the gas from overflowing in the carb bowl. I took it back to the dealer and Aug 8, 2016 · I was looking for some guidance after rebuilding my 2002 Mercury 9. Could this be a stuck float, can I clean or do I need to disassemble? Sep 16, 2019 · I have a 05 Merc 2 stroke that has a slow leak of fuel that appears to be coming from the carb. The hole looks like it should be there as the other Sep 30, 2011 · Its a 1961 Evinrude Lark III 40hp. I have rebuilt these twice, and used a new gasket kit the last time. oyqtoa wla speju xmgn rgbm iayu khee tqljr jug sfdsxe