poly n moly! Have
Join Date: Feb 2014
Location: United Kingdom
Whilst pulling the tensioner loose I twist the eccentric pulley with a spanner, or cranked circlip pliers, it holds itself in position because I slightly nip up the holding bolt. When its in position I tighten fully, then let go of the sprung loaded tensioner. If it's still squeaks and the belt is clean, I would apply some belt dressing/condioner. Some people don't recommend the dressing, but its ok in SMALL doses.
If it still does it after that, somethings wrong else where, semi seized bearing, cover rubbing, pulley worn/misalignment, drive grooves full of crap, failing/loose crank pulley, stretched/aged belt, theres lots of reasons it could be. Running with the belly pan removed also make things a bit more noisey!