FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
I have a 1990 mercruiser 3.0. Was out on the water and weird flapping noise coming from front of motor. Figured out it was from the belt area. Went home and checked closer and noticed that the harmonic balancer isn't lined up with the idler pulley of the alternator. It looks like it has...
