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1980 8HP Yammie problem
Hi all
1980 8HP Yamaha outboard. Was running great until a month or so ago.
The problem is that even at full throttle it was running as though it was on 1/4 throttle. If you left the throttle the motor would then cut-out. It should be noted that in neutral if you revved her she seemed to get to top revs. Even in neutral it would slowly die if no throttle was applied.
I replaced the plugs, no change.
I cleaned the carb and adjusted the idle screw, she idles beautifully now and seems to be revving up a lot higher in neutral. I checked the plugs again since my test run after replacing them and the top plug was clean, the bottom one had some black reside (muck) on it.
The problem now is that as soon as I engage Forward, she cuts out.
Is it maybe the idle screw?
If it's a timing or compression issue how would I go about checking that?
Thanks in advance.
1980 8HP Yamaha outboard. Was running great until a month or so ago.
The problem is that even at full throttle it was running as though it was on 1/4 throttle. If you left the throttle the motor would then cut-out. It should be noted that in neutral if you revved her she seemed to get to top revs. Even in neutral it would slowly die if no throttle was applied.
I replaced the plugs, no change.
I cleaned the carb and adjusted the idle screw, she idles beautifully now and seems to be revving up a lot higher in neutral. I checked the plugs again since my test run after replacing them and the top plug was clean, the bottom one had some black reside (muck) on it.
The problem now is that as soon as I engage Forward, she cuts out.
Is it maybe the idle screw?
If it's a timing or compression issue how would I go about checking that?
Thanks in advance.
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