Onan 4000 cranks one revolution only
Onan 4000 cranks one revolution only - then no more. I can hear electronic buzzing sound. Before I chase the problem and throw parts at it I thought I'd ask for input/suggestions. Battery is fu...
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I have an older Onan 7000 that locked up on me. A chunk of carbon broke loose and jammed up the piston. I pulled the heads and cleaned out the carbon. Reinstalled the heads and it started up and ran fine.
