2004 330ci Vacuum on my oil cap even tho took out the ccv valve

Asked by Joe330cibmw May 30, 2017 at 10:11 PM about the 2004 BMW 3 Series 330Ci Coupe RWD

Question type: Maintenance & Repair

Theres still a lot of vacuum pressure on my oil cap I took
out my ccv valve  replaced it with a oil catch can I also put
a pcv valve back in the  line from the valve cover to  the oil
catch can . The second line from the oil catch can went
back to the intake manifold.  Why do I still have  vacuum
on my oil cap

2 Answers
70,085

Kelly answered 6 years ago

YOU WANT THE VACUUM ! SUCKING VACUUM IS GOOD... SUCKING FROM THE OIL FILL HOLE IS GOOD...... OIL CATCH? SHOULD BE A SEALED ENGINE..

Mark helpful
221,005

Rowefast answered 6 years ago

On vehicles with an external Crank Case Valve, CCV, the valve should be replaced. On BMW E60 with the N52 Engine, this is external. On some BMW's the CCV Valve is integrated into the valve cover. In this case the valve cover would need to be replaced.

Mark helpful

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