Re: occasional rattle after head gasket replaced - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: occasional rattle after head gasket replaced
Posted by John Schreiber [Email] (more from John Schreiber) on Tue, 2 Oct 2012 05:14:17
In Reply to: occasional rattle after head gasket replaced, jeff, Mon, 9 Jul 2012 17:32:18
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you may be hearing preignition. Trionic is compensating for it, so it is transient.
This is common after milling cylinder heads, when the sharp edge at the head surface to combustion chamber interface is not removed. You can't expect the machine shop to do this, unless you ask first, but it is extremely important.
posted by 67.35.11...
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