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peterh41

peterh41

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1982 Johnson 25hp occasional pre ignition. Previously running perfectly but now (after storage period) starts immediately and tickover is OK except occasionally fires way too early and either stops or just recovers. This happens approx every 10 to 20 seconds. Also will not rev, on advancing throttle engine speeds up a little then dies and same occurs if opening throttle by hand, (not via usual throttle lever). Carb stripped, cleaned but nothing found and tried adjusting mixture screw. Suspect Power Pack? but how to test - any suggestions?
 
They simply " do not fire way too early "---------------------Check the adjustment on the rod that goes to the towershaft.-Some folks adjust this because it " looks wrong " when it is correct.---Sounds to me that it is running lean or carburetor is opening too early !
 
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