2 stroke outboard runs then dies

29. Aug 30, 2009. #5. Re: Yamaha 25 4stroke starts then dies. Soaked the carb overnight in carb cleaner. And then reinstalled everything. I primed the bulb until it was hard and it fired up on its own after 10 seconds of cranking and then died again. It idled fine for about 30 seconds and the nothing. After the intial start up the motor would ...

Hi, I have a 40 hp 2 stroke Suzuki, the last time it was on the water it ran good, full power, for about 2 hours, then it started making this chirping sound almost like a backfire or something. Brought it home now it will on fire one time it will start and immediately die. Let it sit for a couple hours then it will do the same thing.7. May 26, 2017. #1. As in the subject line, those are my symptoms - with the addition that manipulating the throttle has no affect. It runs for a set length of time and then shuts off. All of the reading that I've done seems to indicate that it's an oil pressure safety switch that has failed (though I'm wide open for other suggestions)Here are 10 reasons and fixes to help prevent lack of fuel to a 2-stroke engine. 1. Mixture Screws. The first thing to check before anything else is the mixture screws. The fuel air mixture screws on the side of the carburettor are marked H for High for the engines high speed adjustments and the L means Low for the engines low speed adjustments.8 posts · Joined 2010. #1 · Jul 5, 2010. I have a Yard Machines by MTD lawn mower. I pump the primer 5 times, and it starts every time, but just as the engine is reaching normal rpms, the engine dies. It only runs for 1-2 seconds then dies. I changed the air filter and put a new plug in it, and it still has the same problem.Jul 21, 2018 · 9.9.yahama outboard engine surges while running.idle reves up really high on starting or shifting from gear to neutral then drops to low idle and stumbles o...It just sort of bogged down and died. I start it back up and it dies within 5-10 seconds each of the 10,000 times I get it started. I tried starting it and revving it up and it …This abnormal movement may indicate a bent, broken or altered propeller. Turn the motor off, pull the motor out of the water and visually inspect the propeller for damage. Suzuki outboards are produced by Suzuki Marine. They can range from 2.5 horsepower to 300 horsepower. Outboard motors are attached externally to the stern.

If it isn’t, it will cause your engine to become fuel starved, run rough, and eventually stall. Simply twist it open and monitor your engine for improvement. If your outboard motor isn’t running at its best, check the fuel vent on your portable tank to make sure it’s open. Photo courtesy of Attwood.It might run as example in lawn mower, chain saw or motorcycle but at lower RPM's. Once you put the cover on, your engine calls for more gas but is getting a lower grade octane and will cause you engine to over heat. Try adjusting the needle jets by first increasing the idle and then the mixture.Evinrude starts then dies. 06-11-2016, 09:14 PM. Thanks to Joe Reeves help my motor has been identified as a 1988 88 or 90 hp. After replacing the power pack I now have all 4 cyl firing with a nice blue spark. Now it starts up and dies in a second or two, after starting 3 or 4 times it just turns over but not starting.I'm still receiving my education in outboard motor troubleshooting, maintenance, and repair. issue: outboard motor (75hp mercury tracker -- 3 cylinder, 2 cycle) cranks, run well for several minutes at full throttle, then dies (or sometimes idles if I pull back the throttle when I hear the engine losing power).I prime the bulb, the motor …29. Aug 30, 2009. #5. Re: Yamaha 25 4stroke starts then dies. Soaked the carb overnight in carb cleaner. And then reinstalled everything. I primed the bulb until it was hard and it fired up on its own after 10 seconds of cranking and then died again. It idled fine for about 30 seconds and the nothing. After the intial start up the motor would ...Re: 1995 90 HP Mercury Outboard - runs for a while then shuts down New developments in regard to this. After a discussion with a local Mercury Outboard mechanic, he confirmed the fuel pump operates on crankcase pressure and that pressure can be lost if the oil reservoir top isn't secure.5. Apr 16, 2001. #1. We have a 98 25hp Evinrude that has an annoying habit of intermittently bogging down or losing power when we run at full throttle. One of the problems is that it is completely unpredictable as to when it is going to happen. When it happens we stop the motor take it out of the water for a minute or so, start it back up and ...Problem #2: Poor Performance. If your Mercury 20 HP 4-stroke engine is running poorly or not producing as much power as it used to, it could be due to a number of factors. For instance, a dirty air filter could be restricting airflow to the engine, which can lead to decreased performance. In this case, remove the air filter and clean or replace ...

To repair this, replace your fuel filter. 4. Too Much Oil Can Cause the Engine to Shut Down. When there is too much engine oil in your snowblower then your engine may smoke, run terribly, and eventually may shut down. Too much engine oil can get up to your spark plug, into your cylinder, and hydro lock your engine.Because the concentration of oil in a 2-stroke is so low - 1:40 or even 1:50, depending on the engine, it's easy to think that it isn't necessary. Not so; it's vital. Running a 2-stroke without lubrication is not good. If your engine will still turn over, it isn't seized, and you may have dodged a bullet. Put the correct oil/fuel mix in and see ...I got a new 2019 DF 2.5 and I'm having two issues. Just wanted to see if they are actual issues before taking it to a dealer. Only 8 hours in on the break-in period. 1st issue: High warm idle. When I start the motor cold, it runs at a nice, low idle. I can put it in gear and it works like normal. After running around for 5-10 minutes (getting ...15hp strange loss of power. 07-01-2014, 03:04 PM. Hi All, I have a 15hp (15fhm) 2 stroke and here is the issue. Engine will start up fine 1st pull. Engine will idle fine. Go into gear and idle fine. In idle will rev up fine. However under load wont go past half power. at points with WOT it seems to try.Tweet. #1. 2003 F115 hp 4 stroke problems after 15 minutes of running. 09-13-2020, 01:10 PM. My motor run great from idle to wot for about 10-15 minutes, then starts cutting out. Tach goes crazy up and down and engine really hesitates, and dies. Sometimes it starts back up, but I usually have to wait for 15 minutes for it to cool down, then it ...Suzuki DF250A runs good and then dies. 10-18-2021, 10:23 AM. Good Morning All, I have a 2002 2800 hydra sports boat with twin 2018 DF250 engines. The boat seems to run great until I stop somewhere for a while and start back up. It will usually run for 3-5 minutes and then die. I get 3 beeps when it shuts down.

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2007 Mercury 90 2 stroke carb'd. Rebuilt the carbs, new plugs, new filter all around 100 hours or so ago. Maybe a little less. Been running great. I changed the fuel line a couple weeks ago and I've had it out on the water probably 3x since then and it's been good. No different.If your Mercury outboard run then dies and you need to change your fuel filters on the 2005 Mercury the fuel filter is difficult to find. In this video I wil...The most common cause of this issue can be attributed to incorrect spark plugs, so be sure to check that the right spark plugs are being used first. The other issue could be an incorrect gasoline/ two cycle outboard oil mixture. More serious issues are also plausible, for example, the choke or cold start enrichment circuit could be failing to ...When the engine runs fine for about a minute and then dies, and you need to keep pumping the fuel bulb to keep it running, it typically indicates a problem with the fuel supply or the carburetor. Here are some …26. May 15, 2006. #1. I have a 1996 Mercury 115 ELPTO that runs perfectly. The problem is that when I am running at full throttle the engine suddenly dies. It doesn't sputter at all. It just dies. Then I can fire it right back up and it will do the same thing again.

Here are his thoughts on Hesitation and Bogging Down On Applying Throttle. This is a common problem and is usually caused by a sticking timer base under the flywheel or fouled, clogged carburetors, however… also check the carburetor linkages, compression, spark, and the timer base as follows. Carburetor Linkages: Check the carburetor throttle ...Most two-stroke engines have two screws that allow you to adjust the carburetor. One of these screws adjusts the mixture of the gas/oil/fuel mixture, and the other screw controls the speed of the idle. To adjust the carburetor, you need to have the engine running. Slowly turn the screws to adjust the carburetor until the engine is running smoothly.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 …Messages. 4,087. Mar 27, 2012. #2. Re: Mercury (Classic) 40 hp loses power on full throttle. Typically when a motor starts, idles, and runs well at full throttle for a bit, and then performance dies down it is a failing ignition component. And LOL at "classic". There are some guys on here with motors from the 30's and 40's!!Mar 16, 2011. #1. I have a 2002 Mercury Outboard 115 EFI 4-stroke that sputters and stalls when I bring the throttle from high to low/idle rpms. To avoid it, I have to bring down the speed really slow. Or sometime when I'm at low idle speeds it will sputter and stall. New plugs, thermostat, and fuel/water seperator filter.Yamaha 40 hp 2 stroke - starts, idled shortly, then dies. I recently purchased a 15 foot whaler with a 40 hp 2 stroke Yamaha outboard. The previous owner had it regularly serviced and hadn't shown an issues until today. I was out with a buddy today and it was running fine.If the kill switch looks damaged, replace it and put the gear on neutral before starting the engine. 2. Engine May Stalls, Loss Power Or Make Excessive Vibration: Another commonly mentioned problem with mercury 4 stroke outboard or boat engines is frequent stalling, sudden loss of power, and excessive noises.Nov 27, 2017 · 999. Nov 26, 2017. #3. Your problem has been going on for two years. If you would bet your life the fuel system is perfect,then. It's a wire, just a guess, anything this weird and long is usually a wire corroding almost all the way through in a wire connector. Pull all wires that go into a wire connector very hard.And,In under two minutes, you could learn how to solve the problem for good! This helpful YouTube video by Succstrat explains what might be affecting your ability to get going. The way you have your primer bulb mounted could be your issue—and even if it isn’t–this guy’s accent and deadpan delivery are worth watching! Boat Fuel Problem.Hi all, I had something kind of strange happen to me today. DF200SS 4 stroke. I was running around the lake and fishing. About 3 hours into the day, As I was getting on plane, I lose all power the engine goes all the way down to 0 rpms and shuts off. I then hear 3 beeps. Concerned, I checked my C10 gauges for any codes thrown.

When the trimmer starts and runs, replace the fuel cap with the trimmer still running. Continue to let it run for a while. If it sputters and dies with the cap on and then immediately starts and runs once the cap is removed, you most likely have a problem with the fuel tank vent. Replace the vent with a new fuel tank vent. 8. Dirty Carburetor

Re: 28 HP Evinrude SPL start then dies. If you have oil residue as you say then you are not running at 100:1 or your carb is a mess. I would suggest that you are running rich and flooding. OMC recanted on their 100:1 so you should run on 50:1 to preserve the motor. 2.Posts: 42. Re: Outboard dies when throttling up from idle. Bstowers, All fuel has some water in it. There is a way to drain your fuel out of the engine and then running it dry. When you are not going to use your engine for three or more weeks. There is a fuel funnel that will polish old fuel.Outboard Runs Poorly When Idling. The checklist for an outboard that remains running poorly at idle is the same as for when it stalls while idling. However, there's one more thing you can do to troubleshoot an outboard that runs poorly at idle: Clean the Carburetor . Over time, the inside of a carburetor gets coated in deposits left over by the ...Then it dies. This would leave you to believe the others are not firing correctly, but this isn't necessarily so. ... Hello , I have a 2004 Yamaha 2 stroke 50 hp outboard. The engine seem to run good for about 15 minutes. Only went up about 3/4 throttle.(New Boat to me). ... I have a 2 stroke Yamaha 90 outboard. The motor starts just fine and ...Re: Full throttle and 2,500 RPM it will not go higher than that. All the signs say not firing on all cyl's, troubleshooting will zero in on where and why. A timing light will quickly show if the dead cyl is sparking or not. Its not good to rev up like that, if theres a fuel clog you're turning a cyl at 5K with no lubrication.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.Jan 4, 2010 · 7 posts · Joined 2009. #1 · Jan 4, 2010. Help... my 70 hp johnson outboard starts every time but immediately dies within 2 seconds. It can do this all day long. You prime it, raise the throttle assist, choke it, crank it, it fires up instantly, then immediately and mysteriously dies. Good fresh gas and the carbs recently cleaned.Re: 40 HP Mercury stalls when given throttle #2. If he ran it out of gas it's possible he sucked some deris from the bottonm of the tank into the system a good carb cleaning might be in order. As for the fuel pump I had a similar problem with a 70 horse and a fuel pump rebuild ($11 kit about 15 mins to install) made the thing run like new again.

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Suzuki DF250A runs good and then dies. 10-18-2021, 10:23 AM. Good Morning All, I have a 2002 2800 hydra sports boat with twin 2018 DF250 engines. The boat seems to run great until I stop somewhere for a while and start back up. It will usually run for 3-5 minutes and then die. I get 3 beeps when it shuts down.A boat may quit after putting in gear due to a bad fuel pump/filter, low idle, bad shift cable, bad sparkplugs, fuel shortage, and a variety of other possibilities. Many can be avoided with simple, thorough maintenance, though they will all likely need not be fixed by a professional. As you can see, there is a pretty large variety of ...I have a 2005 90hp 2 stroke Johnson carbed outboard. I pre-mix the fuel and oil, and still have the original fuel / oil pump with the oil side disconnected and plugged properly. My problem is at low RPMs, about at "no wake" speed. After running the motor for just a couple of minutes at low RPM, when I give it more throttle, it bogs down and ...When 2 stroke engine troubleshooting and the engine is flooded, you want to spin the engine over fast with the throttle wide open several times. You should start to hear it pop, just keep pulling or kicking and holding it wide open until it starts, then rev the engine a bit to clean it out and keep it running, then warm it up properly.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.Check out these 10 simple solutions for the most common engine breakdowns. Running out of gas. Boat engine is sputtering and losing power. Engine won't start or turn over. Boat engine is overheating. Boat motor stopped suddenly. Vibration from the engine prop. Engine won't shift into gear. Trim is stuck on the engine.If it isn’t, it will cause your engine to become fuel starved, run rough, and eventually stall. Simply twist it open and monitor your engine for improvement. If your outboard motor isn’t running at its best, check the fuel vent on your portable tank to make sure it’s open. Photo courtesy of Attwood.When it comes to maintaining the performance and longevity of your 2-stroke engine, proper oil mixture is key. The right blend ensures that your engine runs smoothly and efficientl...To check if your gas pump is working well, inspect the relay, fuse, fuse holder, and harness connector pins. For the fuel pressure, you should aim for something between 4 to 7 psi. Yes: All good, next test. No: Your fuel pump is most likely not pushing the correct amount of fuel inside the carburetor/engine. As a result, your engine cannot stay ... ….

Most two-stroke engines have two screws that allow you to adjust the carburetor. One of these screws adjusts the mixture of the gas/oil/fuel mixture, and the other screw controls the speed of the idle. To adjust the carburetor, you need to have the engine running. Slowly turn the screws to adjust the carburetor until the engine is running …I have a 2004 40hp 2 stroke manual start. Boat has been sitting for 2 years stored indoors heated. I can get it started but it dies after a few seconds. If I pump the primer bulb by the pull start I c … read moreJun 23, 2011 · The motor starts in about 1/2 a turn, it runs perfectly at idle. It will shift into gear but bogs down when it is under a load. It will not get past 2000 rpm's. Here are the things ive done so far. 1. cleaned carbs with cleaner and air pressure. 2x's. made sure needle was falling when float comes down 2. Drained all old gas out, put in new gas ...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.90% of the time this type of issue is due to gunk in your carb, but before you do a carb rebuild (it's not that hard) remember this. Rule of thumb, you need compression, spark and fuel to make an engine run. Most 9.9hp are two cylinders, this procedure works for two and four stroke engines. Take out the spark plugs.Any person can experience a stroke at any time. Strokes may range in severity from mild strokes that cause temporary weaknesses to major strokes that may cause one side of the body...It might run as example in lawn mower, chain saw or motorcycle but at lower RPM's. Once you put the cover on, your engine calls for more gas but is getting a lower grade octane and will cause you engine to over heat. Try adjusting the needle jets by first increasing the idle and then the mixture.Feb 19, 2018 · In under two minutes, you could learn how to solve the problem for good! This helpful YouTube video by Succstrat explains what might be affecting your ability to get going. The way you have your primer bulb mounted could be your issue—and even if it isn’t–this guy’s accent and deadpan delivery are worth watching! Boat Fuel Problem.September 12, 2023 by longlifesport. An outboard bogging down is one of the biggest challenges a boat operator encounters. When it occurs, the performance of the outboard … 2 stroke outboard runs then dies, Faulty Impeller. Bad Spark Plugs. Malfunctioning Fuel Pump. 1. Tangled Propeller. If your outboard motor will not throttle up, the issue may be as simple as a tangle. Debris such as fishing line, excessive seaweed, beer can rings, or nearly any other material can wrap around the propeller and its spindle., 15 minutes ago, pgiganti said: I have an old Yamaha CT1 175 two-stroke that's been sitting for a few years. I put in a new piston and rings and rebuilt the carb. Now it starts right up on the first or second kick, idles for about 60 seconds and sounds OK, then suddenly speeds up and dies. It doesn't make any unusual sounds when it's running., New Suzuki 150 losing power and running rough under load. 09-14-2019, 10:15 PM. Hey everyone, I'm new to Suzuki's and this forum. I have a new Suzuki 150 with 21 hrs on it. It has run fine since new. I did the 20 hr service on it last weekend and was able to get it on the water today. Idled out from the ramp and brought it up on plane and ..., The world of outboard engines is vast and filled with numerous brands and models, but one that notably stands out is the Mercury 40 HP 2-stroke engine. Known for their reliability and performance, these engines have become a popular choice for boating enthusiasts worldwide. However, like any mechanical piece of equipment, there might be …, Ranny1019. New member. Aug 19, 2023. #2. Check your fuel line for an obstruction and the primer bulb for fuel flow. Some times on an old hose the inner lining breaks down and collapses when the suction of the fuel pump gets higher with increased speed. R., the bike starts up and runs for 10-20 seconds then bogs out and stalls. almost like it floods it self out. took it to a local mechanic and no luck. checked timing and every thing else. starts and runs for 10-20 seconds then dies and wont start until 20 min later then the same. compression is 150 cold and warm, You replaced the plugs recently, but now they're all fouled. You also said the engine dies if you pull the vacuum sensing hose. When you pull that hose, the fuel pressure increases. If the pressure is correct to begin with, disconnecting the sensing hose should only cause it to run a bit rich (but not die)., In the water, exhaust back pressure is encountered due to the fact that the exhaust housing (housing between the powerhead and the lower unit) is filled with water. This would drag down the needed rpms, affecting ignition. Normally the clue to this type problem is that the engine starts fine on a flushette (hose), but is very difficult to start ..., Tweet. #1. Yamaha 90 2 stroke idle. I'm at wits ends. 05-30-2022, 12:52 PM. Boat sat for a few months but was religiously started every week and idled for 5 minutes. Took out for a test quick run, when I returned to dock I noticed engine won't idle. It drops rpm's and dies. Been working on for few weeks now, mostly replacing parts., 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 ..., Jul 1, 2011. #2. Re: Mercury outboard dies at idle... Eduardo said: ...and also in forward gear at idle. This happens only after I run the motor at high speed. Then when I put it in neutral or forward gear in idle, it dies not right away but a few minutes later. The only way to start it is if I push the ignition switch to choke., 11. Jul 16, 2012. #6. Re: Motor Shuts Off While Running. Well it's back at it, I have a 2005 Mercury 60hp 2-stroke 3 cyl. outboard that cranks and runs fine at idle or low rpms but when I increase throttle and boat to plane it stalls and shuts off, then is very hard to crank, if it cranks at all. I have replaced all fuel filters, hoses, bulb ..., 999. Nov 26, 2017. #3. Your problem has been going on for two years. If you would bet your life the fuel system is perfect,then. It's a wire, just a guess, anything this weird and long is usually a wire corroding almost all the way through in a wire connector. Pull all wires that go into a wire connector very hard.And,, 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., Yamaha 200 HPDI Problems. 04-17-2019, 08:46 PM. My daughter bought a used boat with a Yamaha 200HP HPDI in February and has constantly had problems with the engine losing power. Her local marina mechanic has changed the thermostats, replaced the gaskets to the low pressure pumps and adjusted the cables. Each time he fixes something, the boat ..., 9.9.yahama outboard engine surges while running.idle reves up really high on starting or shifting from gear to neutral then drops to low idle and stumbles o..., Yamaha 200 HPDI Problems. 04-17-2019, 08:46 PM. My daughter bought a used boat with a Yamaha 200HP HPDI in February and has constantly had problems with the engine losing power. Her local marina mechanic has changed the thermostats, replaced the gaskets to the low pressure pumps and adjusted the cables. Each time he fixes something, the boat ..., 7. May 26, 2017. #1. As in the subject line, those are my symptoms - with the addition that manipulating the throttle has no affect. It runs for a set length of time and then shuts off. All of the reading that I've done seems to indicate that it's an oil pressure safety switch that has failed (though I'm wide open for other suggestions), 28,765. Jun 19, 2013. #2. Re: Mercury Loss of Fuel Prime. Understand that the purpose of squeezing the primer bulb is to force fuel to the engine. Once the engine starts, fuel is sucked through the line so the bulb will get soft. That is not indicative of a problem unless the ball is sucked flat. That indicates there is an obstruction between ..., Have 9.9 hp Yamaha starts runs 2-4 minutes then dies. Starts again as long as I pump gas with white smoke. Runs 2-3 - Answered by a verified Marine Mechanic. ... 2000 Yamaha 100 hp 4 stroke engine outboard. Set for 2 years and then cleaned up as far as line filters and tanks., In the United States, someone has a stroke once every 40 seconds. Even worse, every four minutes, one of those strokes proves fatal. For this reason, it’s critical to know potentia..., Yamaha VZ150TLRY starts and instantly dies. Last night I changes the VST filter and paper filter in the clear fuel filter on my 2000 Vmax 150 HPDI. I changed it after this past Sunday was on the water and at high rpm's the motor started surging and doing the fuel starving thing. So I ordered the filters and last night went ahead and put them on ..., I have a 1994 Suzuki 115 2-stroke that left me stranded on the river because it wouldn't run. Here's what i did & how i did it for under $10. It's a very eas..., And whatever the power of your 2-stroke or 4-stroke engine: 6hp, 15hp, 25hp, 30hp, 50hp, 60hp, 75hp, 100hp, 150hp, 250hp, etc… What are the most common causes of an outboard motor stalling on acceleration? If none of the above assumptions apply to your situation, then your outboard motor stalls on acceleration almost always due to carburetor failure. …, Then it dies. This would leave you to believe the others are not firing correctly, but this isn't necessarily so. ... Hello , I have a 2004 Yamaha 2 stroke 50 hp outboard. The engine seem to run good for about 15 minutes. Only went up about 3/4 throttle.(New Boat to me). ... I have a 2 stroke Yamaha 90 outboard. The motor starts just fine and ..., Sep 10, 2013. #5. Re: Mercury 50HP 4 stroke stalls at low speed. There is no fuel pressure sensor. The computer cannot tell a weak fuel pump from a failing primary fuel pump or a dirty VST filter sock. Get a fuel pressure gauge and connect it to the fuel pressure port., Big Jon Honda 5hp Outboard Shop Outboards. ... Please help! 60hp Mercury 2002 EFI 4-stroke.....Cranks and runs...then dies! Thread starter goatkeeper; Start date Aug 31, 2014; G. goatkeeper Recruit. Joined Oct 2, 2009 Messages 5. Aug 31, 2014 #1 2002 Mercury 60hp EFI, 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., However, if you're still stuck in the same problem, then there is a good chance that you'll need to purchase a new fuel pump. These were a few common issues you can expect with a Mercury 4-stroke EFI outboard. If you take proper care of the unit, then there is a good chance that you won't have to worry about these issues again., Jul 3, 2012. #7. I had a similar problem on my 1986 25hp. I wasn't going to play guessing games so I replaced the fuel pump, easy fix, gas filter, easy fix, I replaced the primer bulb because mine was old and beginning to dry out and I replaced the gas cap on the tank because it was pretty rusted and I think may have been causing a vacuum in ..., How to Compression Test on Mercury 2-Stroke Outboard Engine. Next. DOWNLOAD Mercury Outboard Repair Manual (1964-2005 Models) Related Articles. Do-It-Yourself Outboard Repair Guides 1965-1989 Mercury Outboard Idle Mixture Adjustment November 3, 2016 Repair Manual 0. These idle mixture adjustment tuning procedures …, Summary. The most likely reason that your two-stroke engine is stalling under load is that your carburetor is dirty or dead. It is still worth it to run through the other, easier fixes of your engine, before jumping to the rebuild of the carburetor. Check your filters, gaskets, spark plugs, and vents first, as you may luck out with a simple fix ..., Summary. The most likely reason that your two-stroke engine is stalling under load is that your carburetor is dirty or dead. It is still worth it to run through the other, easier fixes of your engine, before jumping to the rebuild of the carburetor. Check your filters, gaskets, spark plugs, and vents first, as you may luck out with a simple fix ...