SNAPPING noise under valve cover - Saab 9000 Bulletin Board - Saabnet.com
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SNAPPING noise under valve cover
Posted by steveC in BC [Email] (more from steveC in BC) on Sat, 14 Oct 2000 21:34:28
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After a cold start up all is well for a minute or so, then I get what seems to be a valve noise of sorts (ie SNAPPING) at the distributor end of the head. It **very close to injector noise BUT extremely loud** (almost like someone set a microphone to an injector). The noise is very sharp, almost to the point of not knowing where it comes from (reverberating in my ear or something:-). This suddendly disappears when engine warms up and doesn't recur unless it sits overnight. There are NO other engine rattles or tapping other than this snap. I'm at a loss,,,if the oil feed tubes are cracked, I would think it would be noisy right from the start.
A side note,,,last winter I lost the coolant on top of a ski hill,,,it didn't boil but the cylinder head temp was about 300C or 572F dry (with no coolant....but again,,,there have been no noises or other problems since, until now.
Help? thanks...
Steve C
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