30-12-2017, 03:25 PM
(This post was last modified: 30-12-2017, 03:27 PM by thongmelvin.)
(30-12-2017, 11:30 AM)Ruairidh Dunford Wrote: As already noted - leaky gaskets squeak (exhaust, head, inlet and carb - cover with damp cloth or thin oil to find which).
Top fan pulleys, clutch release bearings and fan belts too.
Is the noise related to engine speed or wheel speed?
The noise is related to engine speed, when I increase the engine revs, the squealing noise increases
(30-12-2017, 09:43 AM)Chris KC Wrote: Did they disturb the gasket between dynamo and housing by any chance?
Sorry, pressed wrong button! Dynamo gears will make a high-pitched whine if you reduce gasket thickness. But it wouldn't be intermittent. I've run SU fuel pumps for years and never heard a high pitched noise from them - they just tick gently when you turn the ignition on.
If disturbing the distributor made it go quiet even temporarily I'd suspect something in that area...
I have only recently changed to the electronic type fuel pump, the previous electric fuel pump was fine.