Overtightened timing belt on BMW E30 M40 ?

[elvirbgd]

Is it possible that timing belt is overtightened ? Last week mechanic replace timing belt on my E30.

Here is the video :

https://youtube.com/shorts/G16T5Puus9c?feature=share

[onthames]

Might be too tight or too loose. I'd take it back to them they should adjust that for free

[rix313]

They aren’t meant to be really tight no.

[elvirbgd]

Problem solved! Adjusting pulley was overtightened. But on M40 engine there is a little hole on timing belt cover and you can through her adjust pulley/timing belt with hex key, without remove up/down timing belt cover casing.

It is cover/hole number 13 on link,

http://bmwfans.info/parts-catalog/E30-4 ... el_casing/