Quote:
Originally Posted by MDORPHN
I don't see how replacing the head would eliminate a tranny rattle...
FWIW, it's only an annoyance. It doesn't indicate anything in need of repair and it can be dampened by going to a slightly heavier tranny fluid.
Neil
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It seems like there are 2 different noises being discussed here simultaneously:
The noise the OP and I had is of a strange valve ticking type noise randomly coming from under the hood. I posted a YouTube video of my personal car making the noise. Coincidentally, I don't think my car has made the noise since I posted the video. I believe it may have happened a total of 4-5 times. Doesn't seem like there is much of a consensus as to what it is or if it is even harmful. @Chrisar82 mentioned something about changing heads, but he has a 128i, not a 135i or 1M.
The other noise that bebo-valdez brought up was the common dual-mass flywheel rattle noise that goes away with the press of the clutch. This is a well known noise that affects many cars with dual-mass flywheels.