logic23 Posted September 4, 2009 Share Posted September 4, 2009 I recenly dismantled my friends forester engine to find a way overheated piston which was cracked and burned on the top side. Has anyone heard why this happens. On old vws it was a timing/ octane issue. Any ideas? Link to comment Share on other sites More sharing options...
idosubaru Posted September 4, 2009 Share Posted September 4, 2009 wow, yeah that's bizarre. was it one of the rear pistons? that's where the head gaskets typically leak on these, may have been proceeded by overheating. Link to comment Share on other sites More sharing options...
Cougar Posted September 5, 2009 Share Posted September 5, 2009 My only thought would be the fuel injector for that cylinder was causing a lean fuel condition. Link to comment Share on other sites More sharing options...
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