GK76A running woes
Posted: Mon Aug 15, 2011 10:41 am
Mate has bought a 1991 GK76A which suffers the folowing problem:-
bike starts and idles OK and revs cleanly whilst in neutral.
will run through the gears for a couple of hundred yards, then cuts out and when it's re-started it revs at around 1000, even with the throttle wide-open! Activating the choke in this condition has no effect whatsoever.
If the bike is left for a couple of minutes, it restarts and goes back to idling and revving OK again.
We have swapped the CDI for a known good unit off my bike (also a 1991, but the CDI's are different?), exhaust silencer (suspected it had collapsed internally), checked fuel supply to carbs and checked the airfilter and housing and all OK - is it a symptom of the dreaded carb disease?
Forgot to mention that we checked the fuel tank breather too, and thats OK as well.
bike starts and idles OK and revs cleanly whilst in neutral.
will run through the gears for a couple of hundred yards, then cuts out and when it's re-started it revs at around 1000, even with the throttle wide-open! Activating the choke in this condition has no effect whatsoever.
If the bike is left for a couple of minutes, it restarts and goes back to idling and revving OK again.
We have swapped the CDI for a known good unit off my bike (also a 1991, but the CDI's are different?), exhaust silencer (suspected it had collapsed internally), checked fuel supply to carbs and checked the airfilter and housing and all OK - is it a symptom of the dreaded carb disease?
Forgot to mention that we checked the fuel tank breather too, and thats OK as well.