Re: Right front rattle - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Right front rattle
Posted by Dean (more from Dean) on Tue, 19 Jun 2001 10:41:41
In Reply to: Right front rattle, Chris, Tue, 19 Jun 2001 09:39:08
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I assume that you have the 2.3 NA engine.
Sounds like engine knock. You have a 10.5 compression ratio I believe.
First thing you need is hi octane fuel. If you have lots of fuel in your tank, perhaps you can add some octane boost with some high octane fuel to get some mixing.
If this provides some relief, then that provides a confirmation of engine knock.
The knock sensor could have a problem. It needs to be properly torqued. Not too loose, not too tight. But check other things first.
Have you got over 100000 miles on the orignal fuel filter?
Replace the spark plugs if there are any doubts about them.
Look for vacuum hose damage which could contribute to leaning out of the fuel-air ratio.
Any check engine lights?
Cables in good shape?
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