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      05-18-2022, 02:39 PM   #10
Saif2018
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Drives: E90 335i
Join Date: Jan 2019
Location: UK

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Quote:
Originally Posted by raffi007 View Post
Hello everyone
I need some help trying to identify this sound
Just for info, i had a spun bearing 2 and half years ago and rebuilt the engine and everything has been fine since then.

I have been hearing this knocking noise on cold start on idle and then when the car is warm, the noise is not there anymore.
Otherwise the car drives great

I have checked both the oil filter and the oil catch can for metal shavings, but there arent any.

What is this sound tho ? Is this the normal engine sound ?
I confess i am getting paranoid as i dont feel like going thru another engine rebuild.
Could it be the lifters ?

https://youtube.com/shorts/1scwJWm_ciE?feature=share
I have had similar sound for a couple of years on cold start, goes away after a few mins diving,

It's probably Evap or lifter tick,

I wouldn't worry about it if it goes away,
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