2 stroke outboard starts then stalls

The first time I used it in December it started on the first pull and ran perfect. When I go to start it again it dies out sooner than the first time.

But no longer runs for more than a few seconds or gets much over half throttle before dyeing.

2 stroke outboard starts then stalls. Why does my outboard start and runs for 1 minute then diesshuts off. Locate the blackyellow wire where it attaches to the powerpack. Start engine and when you want to stop it you can clampstuff rags over the front of the carbs to choke it down.

Outboard 2 stroke Yamaha starts then dies 10 seconds later. Have some issues with my 90hp Yamaha outboard motor. It recently died on me out on the water.

Got towed in and the engine starts fine then stalls out after 10 seconds. When I go to start it again it dies out sooner than the first time. I have a 2002 Mercury 2-stroke outboard starts runs for 1 to 2 seconds then shuts down 10 seconds later you can restart it and does the same thing.

Sometimes boat issues seem like theyll be really complicated but end up being easy to fix. The Marine Mechanic Im going to connect you with knows all the tricks and shortcuts. 1982 Merc 50 hp 2 stroke starts for a few seconds then dies.

Compression tells you whether or not your motor is worth spending time and money on. All cylinders should read close to the same plus or minus a few pounds. My 77 500 reads around 125Lbs for all 4 cold.

I have a strimmer hedge trimmer both driven by a 2 stroke petrol engine. They both start but as soon as they get hot they die. They will tick over for a while longer but as soon as I touch the throttle they die.

Each year I change the plug air filter plus when I have finished using them I drain run them dry. I overhauled cleaned the carbs this spring they were pretty nasty from sitting and it seemed to run perfectly for about 15 minutes then started its old tricks again. I assumed that some dirt had re-clogged a pilot jet.

But I have re-cleaned everything again and didnt find any debris that would cause it to completely die all the circuits are open and clean. 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.

Starts first pull which was a surprise. But no longer runs for more than a few seconds or gets much over half throttle before dyeing. Run time is variable.

Suspect the floatneedle and have disassembled the carb. Checks the fuel runs from the pipe - small but appreciable flow would empty the tank in 10 mins or so. However it will stall periodically.

The sequence goes as follows. Squeeze primer bulb prior to starting will start and run fine. Stop for awhile and then it will start up but stall within 2-3 minutes of starting.

Squeeze the primer bulb and then it will run fine wo stalling until the next time I stop. It seems there is a fuel flow issue. My 1993 Johnson 25hp starts up runs for a few seconds then turns off then its hard to start without using the key switch electrical primer.

Before it turns off if I push the key switch primer in it keeps running as long as I keep doing it. After it turns off I let it sit for 10 minutes and she starts right up without priming and runs fine till she dies again. Outboard stalls after a minute or two of running.

Squeezing primer bulb when it is about to stall keeps it running every time. Compression is 121 psi in both cylinders. Float is set to spec.

Mercury 25E 2-stroke outboard serial Marine Mechanic. 2-cycle starts then stalls after 3-5 seconds. I start it and it runs 3-5 seconds then quits.

I have set the idle screw and mix screw per the manual. I have tried new fresh gas new gas filter nothing helps. The plug is spot on for gap.

If I rapidly move the choke lever back and forth it will keep. My 2003 2 stroke 150 merc runs fine at 12 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 needes replaced new. My recently acquired 40HP 2 stroke 2 cylinder Mariner outboard Yamaha 40M 6E9 year 1992 has not had much use for a while but starts easily ticks over just about OK at idle but stalls when I put it into forward at low speed in the water.

However if I can get it to full throttle it runs fine at high revs and planes the boat happily. At the time I was advised to ensure that it was filled with fresh fuel. I have since discovered that if I filter the fuel through a fine sieve funnel that all the gel like materials is retained and the fuel works fine.

The second trick is to turn off the outboard so that the carb float chamber is essentially empty by running until the engine stops. Outboard engines are popular in small watercraft because of their light weight and wide range of size for both low and high power applications. Outboard engines as with any internal combustion engine require air fuel and spark to maintain adequate combustion throughout the.

We mainly see this issue on two stroke outboards. The reason is pretty quick and simple. With the exceptions of Mercury Optimaxs Yamaha OX-66 HPDIs and Evinrude FICHT and E-TECs most two strokes are not computerized.

This issue is still common even on these engines though. That is because these engines are burning oil. 25hp mercury 2002 2 stroke carb rebuild hey I have a 25 mercury 2 stroke 2002 and just purchest it.

Ran it and it started and then turned choke off and it stalled and then started it again but it wont idle. Fuel tank is clear also the filter is think maybe a carb rebuild and I was wondering if any1 has had the same problem and could let me know. Also how and where is the water pump on this.

Yamaha 15 hp two strokes dies at low rpm. I had my Yamaha 15MSHU two stroke overhauled last year. The first time I used it in December it started on the first pull and ran perfect.

In February I went to use it and it would only start at a very high RPM setting. Home Do-It-Yourself Outboard Repair Guides Mercury 99HP 99 HP Wont Start or Stalls After Starting November 22 2016 Repair Manual Do-It-Yourself Outboard Repair Guides 5 There can be many reasons why a 99 horsepower Mercury outboard will not activate. Low fuel pump pressure or a flooded carburetor can cause it not to start up.

Mercury Outboard Runs Then Dies PART 2 Finding The Other Fuel Filter - YouTube. Yamaha 40 HP 2 stroke - starts idles 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 hadnt shown an issues until today. I was out with a buddy today and it was running fine.