1971 two stroke Johnson

Lee87

Recruit
Thread starter
Joined
Aug 7, 2022
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2
Runs good with cover off. Chokes out with cover on.
 

Chris1956

Honorary Supreme Mariner
Joined
Mar 25, 2004
Messages
29,271
Look for exhaust leak under cowling. Powerhead base is likely culprit.

Also, my Merc had a rubber tube for exhaust relief. It ran from powerhead base thru cowling. When it leaked exhaust into cowling, engine would not run well.
 
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