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have big problem with lean sneeze killing engine at idle. worse when running on hose. happens right at first start or warmed up. coming back thru carbs. I have rebuilt carbs including core plugs and small wire thru all p***ages. Link-n-sync best i can. new spark plugs gapped at .030 or .040. compression 140+, all fuel lines tie wrapped or hose clamps. I guess next i'll try all new fuel lines to eliminate air leaks. 1987 48 SPL any suggestions or little secrets to end this problem. have read 2 other forums for a couple of years and there has never been a clear reason for this sneeze that i can find.
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With engine idling and sneezing, stick two fingers into the carburetor throats, one carburetor at a time, acting as a manual choke to richen the fuel flow.
When/if the engine smooths out somewhat, you've found a offending carburetor.
On that model... I can't remember if the idle jets meter air or fuel. If air, closing the ID some richens the mixture.... if fuel, closing the ID leans it out. -
thanks joe, will try to run engine after work todayComment
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got it idling fine, one carb was slightly open, disconnected linkage between carbs to make sure each butterfly was closed and it ran good, my link-n-sync adjustments need some practice, will use the 2 finger technique if she acts up againComment
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Glad to hear that your problem was a small one.Comment
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