Hyperactive CGT

[Michael Dewar - Sun Scotland]

My 2144 KE coupe has done something similar for several months and I
have still not found the problem. I've changed the warm up regulator,
ISV and cold start valve with no change. The revs on mine rise to about
2k for 2 minutes. Once the warm up phase is complete it idles normally.
What happens if you disonnect the ISV - does it drop back to idle?

Cheers,
Mike


> 
> My 83 CGT (KE engine) has been parked up for a few months. I've been running
> the engine for 10-15 minutes every Sunday just in case I need to use it
> again at short notice. This week it started fine, idled at its usual ~1k for
> a few seconds then spun up to 4.5k and held there. It did that each time I
> started it. I've checked the throttle cable, the throttle valves and the air
> flow sensor plate, all of which appear to be operating correctly. I've tried
> with the cold start valve disconnected but this made no difference. The only
> other thing that I can think is that something in the metering head has
> stuck.
> 
> Any ideas?
> 
> Regards,
> 
> Jim Haseltine
> 
>