Balance Chain: on it's way out or gone? - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Balance Chain: on it's way out or gone?
Posted by arlen (more from arlen) on Tue, 20 Apr 2004 11:19:51
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I've been reading with interest the posts about 2.3l balance shafts, chains, and sludge. Great information on here, as always. My dealer suspects I have balance assembly related issues and we need to pull the engine to diagnose further. '96 900s, 75,000 miles. The work is on hold for a number of days while I wrestle to the death with the after market warranty. In the meantime, I'm trying to lay a strategy for how to proceed should I be footing the bill. The noise that I now think of chain slap sounds like a metallic baseball card running against the spokes of a bicycle wheel; the noise improved greatly as the engine warmed. The last oil drained from the car, immediately before the sound appeared, was a slurry of sludge. I have a pretty good idea of what could ~possibly~ be found when the engine is pulled. What I don't yet have a feel for, and what I'd like to know, is can anything about the severity of the problem be inferred at this point? Is it possible to think about what is ~likely~ or ~unlikely~ to be found based on the symptoms? I'm guessing (ok, praying) that the chain and shaft haven't yet fully disintegrated into an engine-disabling mess due to the fact that the chain slap sound has not changed since I first noticed it and because I hadn't noticed any performance degradation (outside of more tailpipe noise which developed concurrently with the slapping). Is my thinking purely wishful?
posted by 216.207.144...
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