strange noise.

TommoT · Post by **TommoT** » Sun Jul 17, 2011 10:59 pm

My G80 does this when the primary chain is too tight. Typically when the rear chain has yanked the gearbox backwards, due a loose gearbox adjuster/bolt. I should have said used to do this, because after I fitted dual forward pressure adjusters, one on each engine plate, this is no longer possible. Very simple and highly recommende mod.Edited by - TommoT on 17 Jul 2011 10:00:28 PM

wilko · Post by **wilko** » Mon Jul 18, 2011 12:38 am

When i couln't find any reason for mysterious noises on a car when i was a mechanic, we just explained it away with the term "bonnet Howl" the customer was happy then!

SPRIDDLER · Post by **SPRIDDLER** » Mon Jul 18, 2011 12:44 am

I had a Capri that whooooed like blowing over the top of a beer bottle - eventually found that the blanking plug covering a deep fixing screw hole on the driver's wing mirror had fallen out.

wilko · Post by **wilko** » Mon Jul 18, 2011 10:19 am

Noises, i keep hearing noises...

itma · Post by **itma** » Mon Jul 18, 2011 11:56 am

noises? you are lucky
I get voices in me head, the devil drives me

go on ken it says just walk into one of them chinese bike dealers and see what happens

Groily · Post by **Groily** » Mon Jul 18, 2011 12:37 pm

What about the rays? They're coming through the wall now . . . in phase with Ken's tickertape . . .

1608 · Post by **1608** » Mon Jul 18, 2011 12:47 pm

Whistling aerials, Bonnet howling and voices in the head! what ever next. Perhaps I should try a tin foil lining in my crash helmet Groily!
But, I like Tommot's suggestion best.

willschub · Post by **willschub** » Mon Jul 18, 2011 1:58 pm

I once replaced bearings in a car alternator to no effect, later to discover carburetor loose on manifold causing whistling noise.
Just a thought.
Cheers, Bill

1608 · Post by **1608** » Fri Oct 14, 2011 1:54 pm

Mystery solved, it was the tin cover over the gearbox that sits on the engine plate. I became convinced that it was gearbox whine as the noise was most pronounced when accelerating in third gear ( the hardest working gear that usually starts to whine). When the engine revs reached a certain frequency it set up a reverberation in said tin cover.

wilko · Post by **wilko** » Sat Oct 15, 2011 1:00 am

Well, that's a sort of bonnet howl!