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E36General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.
You can diagnose a vanos noise from others very easily.. pop the hood and manually rev the engine from the throttle body. Put your ear to the front of the engine cover and if you hear a metallic chingy sound (somewhat like marbles in a tin can) then thats your vanos making noise. You can open it up and service it, like cleaning all the built-up oil and gunk and that should help oil flow to it. Other than that BMW will replace it outright but I have heard you can just replace a $100 solenoid and that is all you need..
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Your Ride: 94 bmw 325i, 97 vw golf
interesting i'll have to look into that, because my car does sound a little odd when I rev it up, but I assumed it was because the engine wasn't completely warmed up, should I try this after it's warmed up?
Here's some good photos of the VANOs unit, it dosn't seem to difficult to take the valve cover off and check the sprockets and clean up some gunk.
Yah, the sticky vanos problem (dont think it causes marble noises) is just a solenoid that goes bad. Not too expensive.