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2004 Z4 3.0. Does Anybody know what this engine noise is?
For the last few weeks, my engine has been making a weird noise when I let the car sit for a few days. Once I start it, it will make the noise while the engine is cold for a few minutes. If I rev it or drive it, then it wont make it anymore. I took the car to the dealer and they could not replicate the problem so they said they could not do anything about it. I finally took a video of it ans showed my service advisor and he said to leave it for a few days so they can try to duplicate the problem. My warranty expires on 9/20/10 so I want to get the problem fixed before the warranty expires. I talked to the service rep and he said it could be the Vanos or something else, originally I thought it migh the lifters (a problem that is happening on the E86), but they said the lifters make a constant ticking noise so that most likely is not the problem. Please help! I posted the video on youtube and here is the link