I have a 2002 Yamaha 90TRLA that has never given me a minute's trouble. Took it out Memorial day and it ran great. Took it out on Sunday and it was hard to start but did start, idled a little rough and then when I tried to run it bogged down. This continued for a few minutes, bogging down and quitting when I tried to run. It finally idled OK but would not run. I changed plugs which did not seem to be fouled and put it on the trailer and came home. I am thinking either a fuel pump or fuel filter issue is the cause. What say you? Thanks for any help.
make sure the timer assembly moves when you advance the throttle, it is a very common fault in those and thats the symptom, they will idle, but die when put in gear and try and run.
After reading copious other posts and some investigating I believe that this is caused by the recent fuel change. My preferred gas station is now selling the Government mandated E10 gasoline. I think that I will clean the fuel system and install a Yamaha mini 10 fuel water separator and change the filters regularly. I prefer to eat my corn not burn it. Special thanks to Rodbolt for all of his replies to others, they may have helped me cure my baby.
I have the same problem with my Yamaha 100 (same motor as the 90). I would like to check the coils and the timer assy as suggested.
Can you tell me a little more about how to do this.
Yamaha 90 bogging down
Re: Yamaha 90 bogging down
Re: Yamaha 90 bogging down
. Special thanks to Rodbolt for all of his replies to others, they may have helped me cure my baby.
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