1990 Yamaha pro 50 poor aceleration

hevysrf

Petty Officer 3rd Class
Joined
Apr 3, 2008
Messages
78
Motor is new to me this season, idles nice on hose, starts easily, hot or cold, has fresh plugs. Hesitation when trying to get on plane. When at idle in gear, at 800 rpm in water, pulling either top 2 plug wires will cause stall, bottom wire has no effect. Only see a stong blue spark occasionally on that one .
Removed plugs, top 2 have light brown porcelain with some black on outer metal, bottom plug is wet with fuel.
I'm thinking coil is N/G. Thanks MartyD
 

hevysrf

Petty Officer 3rd Class
Joined
Apr 3, 2008
Messages
78
Re: 1990 Yamaha pro 50 poor aceleration

Problem fixed, # 3 float would not shut, debris inside. Don't ask me how it got past the filter. MartyD
 
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