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Help,Help Enging Noise V70-XC70 2001

posted by  KlausC on  Tue Jul 8 05:19 CST 2008
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

Try having your mechanic remove carbon deposits from the cylinders. This can be done with water or a solvent like SeaFoam, sucked into the intake manifold (very slowly). The carbon deposits will glow and cause pre ignition, knock.

Is your Lambda light on or any engine errors detected? The knock sensors should be able to retard the timing enough to stop the engine from knocking.

Klaus
--
I still miss my 164






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