I need help, this is my first BMW, I bought a 1998 750il.
I have had it for a year now awesome machine, the warranty just ran out in May.
I started it up today to go to work and heard a hissing noise. I opened the hood and located on this RHS (passenger) what seems to be a vacuum leak from the rear of the intake. There is a plastic end cap with four star type screws holding it on. When I put my hand over it, the sound changes?
Is this common, any ideas on what I can do to repair this short of a trip to the dealer?
Oh, when I pull the oil dipstick, the pressure bleeds down, kind of like pulling the hose off a vacuum booster, is it safe to drive?