lundi 16 mars 2015

Annoying, noise! any ideas?

I have a 25 commerse diesel,

there has been an annoying 'buzz' like a washer rotating fast on a shaft at exactly 1900rpm for a while, it was ONLY at 1900rpm, stood still, moving, neutral, or driving.

now it has 'expanded' to 1900 to 2500rpm



as it is present when the engine is stationary i have ruled out gearbox etc, it does sound like a whiny straight cut gearbox sound, or a VERY tight ford cambelt whine, but its neither... but im damned if i can discover the source of the sound!



anyone else had similar happenings?





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