Quote:
Originally Posted by mobilejo
My first suspicion was motor mounts - see my previous thread: http://www.xoutpost.com/bmw-sav-foru...ml#post1057441
But BMW tested the vac system and that was working within spec, and every mechanic who has physically inspected the mounts has said they look and feel fine. When punching the gas with foot on brake, there is no visible engine movement other than perhaps a cm or so. So I have almost ruled out engine mounts.
Also, the buzz sound (which started after I suspected engine mounts) seems to be related - and I don't think engine mounts could cause that noise without there being alot of engine movement. |
Don't know if this test "When punching the gas with foot on brake, there is no visible engine movement other than perhaps a cm or so" is adequate for diagnosing our modern active mounts.It sure applies to older rubber type engine mounts.I think your best bet would be to change mounts at this point if you are not seeing anything obvious.I felt a difference after new mounts but it all depends on how worn your existing mounts are.The difference was not much but it was there.