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Old 08-17-2010 | 01:39 PM
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Lnewqban
 
Joined: Apr 2007
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From: South Florida
Default RE: old os max 20 plane engine problem

Take the plug out and try to turn the engine by hand (back and forth gently).
Then turn the engine upside down and repeat.

It could be a liquid jam, if too much fuel was primmed into it before starting.