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Old September 10th, 2007, 12:53 AM
mannyc mannyc is offline
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Default 84 yamaha low compression one cylinder

i have an 84 yamaha outboard - 90hp. will not run right. stalls at anything less than 1000 or so rpm. did a compression test - top to bottom 135, 125, 85-90. Do i have a bad motor or is there something i can do? any help appreciated. the motor ran fine 2 seasons ago, was fogged and i just went through the hassle of removing the powerhead to do the stainless shift shaft conversion. any ideas please help. thanks, manny
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Old September 10th, 2007, 01:44 AM
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JUSTINTIME JUSTINTIME is offline
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Default Re: 84 yamaha low compression one cylinder

you can try a de-carb and check agin
but i say you have a worn motor
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