FZ750 ticking at idle

[A100man]

Hi All

I can hear an annoying ticking on my FZ750 at idle. It either disappears or gets drowned at higher revs though. I've been listening around with a large 'screwdriver stethoscope' and can't locate the noise however.

I have one broken exhaust collet which means #1 might not be sealing properly and I've read that can lead to a curious sound - but ticking ? Seems to be synchronised to engine revs.
Any other thoughts ?

Cheers
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[RhynoCZ]

It could be the timing chain tensioner. That noise usually goes away with revs.

Also, that bike has got a ''car-like'' alternator there, doesn't it? Try to turn on and off lights and so on and check if the noise changes.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[misscrabstick]

Get the bike out of any wind ( in a garage), hold a piece of toilet paper near the exhaust collets, see if it blows about, if it does it indicates exhaust gas leaks ( blows the paper).

Perhaps you have an excessive valve clearance? usually they go tighter with time but that's not a hard and fast rule.

[A100man]

Thanks - some things to try..

Cheers
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[Pol Anorl]

itll be the cam chain, find an empty rode and rag the arse off it in 2nd gear (redline dat shit) it should click up on the tensioner.


source: common fix on fzs 600
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[weasley]

When my XJ600 developed a tick I was convinced it was valve related. I changed the tensioner, checked and adjusted the clearances (twice) and still it ticked, just like a valvey sound. Turns out it was a blowing gasket on one of the head-to-downpipe joins. Fixed that, tick went.
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Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE