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      12-11-2017, 08:56 AM   #1

Drives: 2011 E93 M3 6MT
Join Date: Nov 2016
Location: Longview, Texas

iTrader: (0)

Sound from engine.. Tensioner Pulley?

I have recently noticed this new sound/tick from the engine. I have researched sounds that are similar to mine, and I'm hoping its just a tensioner pulley. I am almost at 80,000 miles, so I went ahead and ordered the N55 belt assembly kit from ECS Tuning. All mechanical parts of the serpentine belt and pulleys look to be sound and in good shape. I don't see any worn or torn parts on the belt itself, and none of the pulleys seem to be shaking or rattling. Can anyone help diagnose this issue? I am hoping it's not a rod knock... The sound does go away once the engine is warmed up. Link attached to video below.

Last edited by illusiveM3; 12-11-2017 at 09:03 AM..