SOHC.co.uk Forums > CB750

BURBLE i THINK

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billy192:
Hi,
Took the 750 for its MOT today and failed on no split pin in rear brake arm and old numberplate was a:to small and b: no British Standard number. so all jobs will be done by tomorrow.

On the way there and back when ever I sat at lights or in stationary traffic every 6-10 seconds I heard a noise from around the air box like a small back fire (or burble). at first I thought there was a bike behind me making the odd rev noise.  I was told the bike has only done 3k since 1993.

Any ideas?

Billy

mick:
Hi Billy is it like spitting back? could need carbs setting up with vacuum gauges or even more cleaning out? they are notoriuos for needing to be ultraclean, cheers Mick.

billy192:
Thanks Mick

my mistake its spitting through the exhaust  only on tick over well i cant hear any thing whist running. Could it be points/condenser or timing?
 

Billy

Bryanj:
More likely air leak at exhaust joint

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