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Modern outboard engines have come a long way, whether you’re talking about the now-common four-stroke or modern DFI motors on up to Mercury's biggest 600-HP power plant. In any of those cases, reliability is far better than it was in decades past, fuel efficiency has increased, and problems like smoky exhaust and ear-splitting sound …New member. Jul 19, 2009. #1. "I have a tohatsu 2004-5 18hp. "I have a tohatsu 2004-5 18hp 2 stroke with approx 100hrs use,recently serviced, new plugs.It starts,spits a bit, and runs fine for about 10 mins. then dies as if u were trottling back.Put it into neutral for a moment and away again for a minute or two and it dies again.Been told it ...The first thing to do is to run the engine off a portable tank using a different fuel hose. If the problem goes away, the issue is your fuel flow. The possibilities are: 1. Your tank vent is blocked. Test as suggested above by loosening your filler cap.New member. Jul 19, 2009. #1. "I have a tohatsu 2004-5 18hp. "I have a tohatsu 2004-5 18hp 2 stroke with approx 100hrs use,recently serviced, new plugs.It starts,spits a bit, and runs fine for about 10 mins. then dies as if u were trottling back.Put it into neutral for a moment and away again for a minute or two and it dies again.Been told it ...9. May 30, 2015. #1. 1998 40 HP Mercury 2 cycle oil injected motor. SN: 0G650371. I can get the boat to start up fine, it will run at all RPMs under no load. Sound great. Put the boat in gear, drive for about 3 - 5 minutes and then the motor dies. I am able to start the boat back up under no load again, however as soon as I try putting it in ...The fuel efficiency of a 4-stroke motor can be 50% better than that of a 2-stroke motor with the same HP. As for environmental concerns, 4 stroke outboards produce far less harmful emissions, which can be as much as 90% cleaner than those from a similar sized 2-stroke motor. Being more fuel efficient means less fossil fuels are burned, making ...Emrah, There could be a partial amount of fuel entering the carbs. When you run it for 20 minutes you use up all the fuel. Then when it sits for two minutes the bowls fill up again. On each carb float bowl (on the right side) there is a little allen screw. When it dies, try loosening the one on the right carb.Troubleshooting Outboard Fuel Filters. A blocked fuel filter can slow or reduce the amount of fuel reaching the engine. The primary (cup) fuel filter and secondary (in-line) fuel filter should both be inspected regularly and replaced after approximately every 100 hours of use. Your outboard owner's manual will tell you the manufacturer's ...Power stroke ignites the compressed fuel for power; Exhaust stroke releases burned gases; By separating intake from exhaust, four stroke engines prevent emissions and don't need mixed gas and oil. But more strokes mean less power density. Key Differences Between 2 and 4 Stroke Outboards. Power-to-Weight Ratio. Two stroke engines generate ...Mercury & Mariner Outboards . Starter issue mercury 40 hp 2 stroke ... . Starter issue mercury 40 hp 2 stroke. Thread starter Justinehammer; Start date Jul 7, 2020; Justinehammer Recruit. Joined Jul 7, 2020 Messages 2. Jul 7, 2020 #1 Hi all. ... First, when starting, the engine runs and then dies. Sometimes the starter will get stuck engaged ...May 30, 2023 · Possible Cause: Incorrect fuel/oil mixture. Solution: Ensure that you’re mixing the proper ratio of gasoline and 2-stroke oil according to the manufacturer’s guidelines. Possible Cause: Damaged or leaking gaskets. Solution: Inspect the engine’s gaskets and seals for signs of damage or wear. Replace them as necessary.89. Reaction score. 0. Apr 25, 2016. #1. I inquired in another post about a possible fuel pump issue but I'm starting to think my 3 cyl Johnson 35 hp is having electrical issues. I took it out last weekend and it ran fine for a 20-30 minute run. I stopped for a while to fish and then tried to take off. It sputtered and died like it was fuel issue.Merc 60 2 stroke outboard dies out while idling. Motor runs great with throttle down, but stalls out during idle. Does not have a lean/rich adjuster, other than carb idle screws. Rebuilt all 3 carbs with no issues found. Video is attached. Any advice greatly appreciated.Hello, new to the forum and the world of outboards. I have a 2005 Merc 90 hp 2 stroke outboard that has always ran well until recently. It starts good and will take off running good for maybe 15-30 seconds running about 4000 rpms. Then it starts losing power and acts like it is starved for fuel. The rpm will surge and drop between 3000 and 4000.OX66 frustrating issue. 06-11-2016, 05:04 PM. Hello all, I've been having a very frustrating time with my Yamaha 2002 OX66 250 HP 2 stroke. All last summer it was running just fine except that towards the end of summer I notice that if I was running open throttle it would start slowly dropping RPM's on its own.Mercury 2-stroke outboard motors are highly regarded in the boating world for their reliability, performance, and efficiency. However, like any mechanical device, they can occasionally encounter issues and require troubleshooting. In this blog post, we’ll explore common problems associated with Mercury 2-stroke outboard engines and provide detailed, step-by-step solutions for fixing them ...[highlight]Now it starts first time when cold. After running for abo2. Bad or Old Fuel. Old fuel is often the underlying problem whe Bobs201 New Member. My 2003 2 stroke 150 merc runs fine at 1/2 throttle but dies out at full throttle after about 3 mins. It begins to sputter until I either ease off the throttle or it shits off. It it hard to start after shutting off and cranks similar to trying to crank it with the kill switch off. I have changed the fuel filters, had carbs ... Jan 4, 2010 · 7 posts · Joined 2009. #1 · Jan 4, Battery switch is off. If your boat has a battery switch, make sure it's set to the ON position. Kill switch disconnected. A rookie mistake just about every boater has made. Make sure the safety lanyard/kill switch is in place. Incorrect starting sequence. Follow your outboard's startup sequence. For example, if your outboard needs choke ... Jul 1, 2011. #2. Re: Mercury outboard dies at id

Outboard engine RPM’s are lower when they are in gear. They can die when put in gear because one or more cylinders may have a problem and are not firing. Once in gear the RPM’s are so low that the engine dies. Here are the best and quickest technical troubleshooting tips and fixes that you can try in order to resolve this problem.jeremy fountainthemowermedic1mail and business inquires [email protected]://www.youtube.com/themowermedic1https://www.facebook.com/themowermed...I have just purchased a second hand 2003 2 Stroke Johnson 8hp outboard. Perfect condition, clean almost new (looking) When cold it starts and runs fine. When hot it will not idle and just cuts out. It is then impossible to restart it until it has cooled down to cold! Today (we are in spain) we ran it for 5 minutes at full throttle, it was not ...Jul 29, 2010. #14. Re: Primer bulb goes flat- Please help. For plugged vent, remove the gas cap (as others have said) and go out and run it. If you still have the problem, it's likely not the vent. But...you can just google image search or search any boat catalog for a tank vent or gas tank vent and you'll see pics.

Check your carburetor for any grime or dirt and clean it thoroughly. When it's perfectly clean, adjust the carburetor's settings to provide your engine with the proper fuel-air mixture, then try again riding at full throttle. 5. Debris in the Gas. If you have a relatively old fuel tank, look for any debris at the bottom.Boat runs fine for 5 to 10 minutes. Then it stalls and won't restart. If I wait about 20 minutes it will start and run for less than a minute and stop. Has brand new battery. I put on a new coil. Has brand new spark plugs. After it dies it won't even crank (sounds like the battery is dead). It is a 1987 Baliner Capri.…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Messages. 4,087. Mar 27, 2012. #2. Re: Mercu. Possible cause: Summary. The most likely reason that your two-stroke engine is stalling under load is t.