Re: (valve noise/chain rattle)........or pre detonation - Saab 900 Bulletin Board - Saabnet.com
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Re: (valve noise/chain rattle)........or pre detonation
Posted by burlyb (more from burlyb) on Mon, 26 Aug 2002 23:40:35
In Reply to: (valve noise/chain rattle)........or pre detonation?, Paranoid, Mon, 26 Aug 2002 23:29:57
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Rev the engine by hand (throddle) and listen to the engine. Use a tool to the valve cover and to the chain area. Could be chain or an accessory such as alt. bushing or engine mount. I had an a/c idler pulley that went bad and would rattle only during a certain rpm range as well. I would doubt det. at boost that low.
burlyb
'90 SPG
posted by 216.160.1...
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