Generation III Internal Engine 1997-2006 LS1 | LS6
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They say its not piston slap

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Old 11-10-2007, 01:57 PM
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Default They say its not piston slap

It originally sounded like lifters. Last year under warranty, the dealer replaced only 2 on the dirver side. I offer to pay to have them all replaced but thats another story. In addition to the lifters they replaced a belt idler arm. The repair helped, but now its back. When the engine is stone cold it purrs like a kitten, around 105 deg it starts. At 210 its back to purring.

Any ideas?
2001 LS1 A4
Old 11-10-2007, 08:56 PM
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Piston slap when cold, sewing machine when warm.




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