Hi
I have a '97 535s (17,000 miles) that is running like a pig just now. Seems very rattly - I've checked the tappets and they are within tolerances. But it is the general running that is the problem. Now, I've looked at the diaphragms and they are not at all perished/holed etc. HOWEVER - are the diaphragm rubbers supposed to be bonded to the slides? Mine are not and could easily be removed - a sort of push fit.... Is this my problem?
Thank you for any assistance you can give.
Steve