Thread: Knocking noise N55 640i
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      04-18-2021, 11:36 AM   #3
Ssilver356
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Drives: 640i
Join Date: Apr 2021
Location: France

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Yes i don't think it is a rod knock, i will check compressions this week to be sure.

Probably transmission like torque converter but why only with warm engine ? Mystery..
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