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Yamaha 90HP halted

avital9

New member
"the engine seems to run fine

"the engine seems to run fine and suddenly starts
to backfire and stops, then he will hardly start and would run leap even on full throttle after while he breach and runs ok it happens every time.
i try to chek the parameters when it happens and:

1. there is a spark on the plugs .
2. there is a good fuel supply from the pump .
3. i try to clean the carbs a few tims .

i am having this problem for long time and fail to fix it, what other possibility can i check.

**the fishing season is starting here and i ..... :-("
 
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