Quote:
Originally Posted by TheDon
piston slap fixed with new motor mounts.... ha..
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FWIW, there’s an MB Service Bulletin from July 2003, that recommends replacing the engine mounts to cure a “piston slap like sound” on certain V8 powered MB’s. I realize the justncases’ car has the M112 V6, but I’ve fixed many “engine knock” complaints by replacing worn engine/transmission mounts.
Quote:
Originally Posted by Hatterasguy
If its missing it would throw a code. Did the dealer pull any codes out of the SDS?
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Who said the engine was mis-firing?
Quote:
Originally Posted by Hatterasguy
....Also if the dealer said it was piston slap they are idiots, I would never go back. "Piston slap" is a problem that affects some GM engines. On cold starts they will make noise for a few minutes until they heat up and expand. WTF is this dealer thinking?
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So GM has the market cornered on piston slap? I’ve replaced dozens of “fitted blocks” (new engine blocks with fitted pistons), over the last few years due to piston slap. By the time the driver hears it, the piston skirts have made a mess out of the cylinder walls.