Over Hill Sailing Club
Join Date: Feb 2009
Location: Adirondacks NY
Thanked 107 Times in 104 Posts
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Re: Yanmar 1GM10 won't start.
Maybe the valves? Try a valve adjustment before you remove the head. It's possible that one of the valves is fouled up with carbon deposits or even burned and can't seat. Pulling the head will tell you if it's valves or rings. In any case, re-ringing one of these shouldn't cost a lot, maybe $200 for rings and gaskets if you do the work yourself. For a one banger, maybe just order a new piston with rings and replace the bearings while you're at it. You'd essentially have a new engine.
Looks like it ran on ether just because ether doesn't need compression to ignite.
Alberg 35: With a philosophical flourish Cato throws himself upon his sword; I quietly take to the ship.
Last edited by smurphny; 08-08-2013 at 03:46 PM.