735i oil leak from driver side / middle, rear of engine

[slowcar88]

Noticed a funny leak on the engine. It’s on the passenger side, middle to rear of the engine block, right under the starter.

New valve cover gasket and no leaks I can see.

I also have a power steering leak, but noticing I’m leaking both PS fluid and engine oil.

Any thoughts what could be causing this?

Pics:

[shogun]

chain tensioner gasket #24? http://bmwfans.info/parts-catalog/E3..._timing_chain/
or this? quick-fix-for-m30-engine-oil-leak https://www.evansweb.info/2003/02/19...gine-oil-leak/
but that is more to the front

[slowcar88]

Hmm thanks shogun. Front is relatively dry, so maybe something else

[zapass]

There are few pipes like Crank Vent Tube going from valve cover. Usually it is wet inside. I would imagine it might drop some oil when not properly seated. Gas dripping from fuel line? You said it is oil, gas would evaporate in seconds.
Cover gasket not fully seated? And finally manifold gasket damaged, but again, rather gas than oil.

One more idea: ATF from steering system is spread under high pressure from steering system bango bolt onto engine block.

[slowcar88]

Found the leak. It was the oil pressure switch on the head.


Part number: 12618611273