1990 15hp wont stay running without acceleration.

basscat348

Seaman
Joined
Jan 5, 2010
Messages
54
I just rebuilt the carb with the sierra kit.My original problem was hard starting and running smooth.Now it starts fair but wont stay running unless I accelerate the motor with the handle throttle.The low idle speed adjustment screw seems to do nothing now,at least before I changed the parts in the carb that function would work, but it would not keep a constant idle for very long , say a minute then the idle would either go high or low.I am not sure what to do at this point, I have the manual for this engine but it is not helping .
 
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