Slight Squeally rattle when I lift off throttle

[Elibomrod68]

Hello, managed to get bus running better after blasting out carb Venturi holes with an air line. So went off on longer run at the weekend, 180 miles!

Discovered a new slightly disconcerting sound.
What I heard was a faint high pitched squeal. Only really present when lifting off throttle. Not present on idle or constant speed.
I think worse when engine warm.
Really noticed in town with noise bouncing off nearby walls

Has recently removed a shim from the alternator belt to remove a bit of slack. Removed them all gave then shim pack a clean up with scotch bright and reassembled all looks ok

Definitely at back, ie engine gearbox think any gear…
Really got to go out without the family in tow and try and narrow down a bit.

Std 1600 to, 34 pict 3, alternator

Anyone got any ideas?

 

[ozziedog]

This could be a zillion things. Try fiddling about with your clutch when you hear it next, as in touch the pedal as your going along , hard soft and every other version, all to try and hear if your thrust bearing is starting to become a little lemming like :mrgreen:

Ozziedog,,,,,,,,,, also holding gearstick etc etc :mrgreen: