Crank shaft pulley BMW X3

[Jakethecake]

I had a new crankshaft pulley and belt fitted yesterday and now today the car seems to be holding back at around 3000 revs - has anyone else had this problem?

[Easternlight]

Engine type would help?

[Jakethecake]

Sorry diesel

[Easternlight]

we're getting there, 2.0, 3.0, age?

[Jakethecake]

Sorry new to all this
2.0 litre
55 plate

[helix402]

That’ll be an M47tu.

[Easternlight]

Don't know about the disesils, but on the petrol M47 the crankshaft pulley bolt holds all the valve timing, so you need to lock the whole engine with a set of timing tools before releasing it to remove the pulley.
Quite a job.
Why was replacement needed,the pulley's not some thing that wears out?

Edited by Easternlight on Saturday 16th December 19:41

[Elliot2000]

M47 are just held in with a central bolt and doesn’t affect the timing. Maybe they have left something disconnected like a vacuum pipe or an actuator