545MMM

Hi guys,

Vac pump checked properly no vissible leaks from front or rear, looked like it was the oil pressure sensor so I changed it and it looks like now its leaking from on top of it, not sure what this is some help would be great
Sorry for the double up
Thanks

Quarta2six

Time for a new Upper Timing Case Cover gasket. Had the same leak me and some a couple of other people that chimed in on my thread thought it was the oil pressure switch sensor but it was mine also showed a lot more oil. UTCC is a pretty common leak tho from what I understand. I'm sure someone else will give there opinion.

545MMM

thanks for your reply. so did you change both sides? or just the leaking side?

Gatriel

While you've got the engine apart for TCCG do the Valve Cover gaskets at the same time. You can usually save a bit of labor that way, and it has to be done anyhow.

I'd also take a look at the alternator bracket gasket -- which is the only known to fail gasket on the BMW that is under a higher level of pressure than the VCG and TCCG. It spews oil like the Deepwater Horizon. (too soon?)

545MMM

Thanks for your response, just playing around with it now, when I remove the oil cap the engine stalls everytime? I highly doubt this should happen?

SlvrBmr545

It means it is working like it is supposed to . By doing that you just introduced a huge air leak into the system .

healthservices

Normal... this BMW crankcase is always in a state of vacuum when ever possible. It is not ventilated controlled or otherwise.

I'm in the OC if you need help with the upper timing cover gasket.

toyota2bmw

Get'er done! I had HealthServices help me with mine when mine were leaking. Both timing chain covers, valve covers and while you are there might as well do the new o-rings for the vacuum pump as well. It's not for the faint of heart so take it to someone who's done a whole bunch of these on his, mine and even on E65s.

SlvrBmr545

Cool members helping each other .. Very Nice . You went through lots of beer I bet . LOL