E46Fanatics - View Single Post - Strange engine noises
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Old 07-25-2013, 04:56 PM   #6
farukh
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Join Date: Mar 2012
Location: Fort Myers, FL
Posts: 388
My Ride: BMW 325i 2002
Quote:
Originally Posted by jdstrickland View Post
Even better, take the belt off and turn the pulleys. You may not see any strange movement, but you should be able to feel rotation that's not right, especially if you get a new pulley and compare how it feels to the old one.
^that! OR, take the belt of and spin the the pulley hard... if it spins freely - it's time to change it! Good pulleys have some kind of mambo jumbo inside and don't spin freely.
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