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86 150 stalls when idling

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rikclark

Member
ffirst time out after carb clean and rebuild. Starts fine, runs great, but "coughs and sputters at idle. Have turnedd idle adjustment screw to as high as rpm as possible and still be able to shift (approx 1200 RPM). Motor "coughs and sputters" then dies. Restarts fine but can't keep it running at adle speed. Couldit be fuel pumps?
 
Hasn't any body else had this problem and found a way to fix?
rikclark said:
ffirst time out after carb clean and rebuild. Starts fine, runs great, but "coughs and sputters at idle. Have turnedd idle adjustment screw to as high as rpm as possible and still be able to shift (approx 1200 RPM). Motor "coughs and sputters" then dies. Restarts fine but can't keep it running at adle speed. Couldit be fuel pumps?
Click to expand...
 
Most folks pick the carburetors to start with !-------------Answer these ??------Was there dirt in the carburetors ?--------Have you done a compression test ?--------Have you checked for STRONG spark on all leads ?
 
Thanks for the input Racerone. Carbs were clogged because I neglected to add conditioner to the fuel when I last refueled in the fall. Some jets clogged, but not much dirt in carbs. Rebuilt and adjusted to specs during tune up. Have checked everything but the spark on all cylinders. Will be this weekend's project.
 
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