Volvo 850 site: Repairs, Forum
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Matt
Volvo Forum

Posted by Greg on July 11, 2002 at 15:16:49:

I recently rebuilt the engine on my '93 850 non-turbo. Five thousand miles later it began to run poorly and I discoverd two burnt exhaust valves. I took the head to a very reputable machine shop and they did a valve job for me. I removed the piston from the corresponding cylinder and found nothing wrong with piston, rings or bore. I reassembled the engine and five thousand miles later another cylinder has burnt valves.

Any theories? Please help!


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