[Mgs] Cruise control!!!

[PaulHunt73]

It *could* be a vacuum leak, but only if you can slow the idle to it's 
normal level by backing-off the idle screws.  If not, then there has to be 
enough mixture getting through to make the engine run at 3k, an engine can't 
run on air alone.  But if it performed normally in normal driving, i.e. 
didn't hesitate when you opened the throttle, then it's very unlikely to be 
a vacuum leak.

Other than that if the idle screws don't reduce the idle then something is 
allowing 'normal' mixture to get past the butterflies.  Is there a bit of 
free play in the throttle cable?  Are the idle screws on the stops?  If not 
are the fast-idle screws free of the cams?  If the butterflies *are* fully 
home, then if they have poppet valves the maybe one of those is stuck open. 
Other causes can be unbalanced linkages between the two carbs such that one 
fully closed is holding the other partly open, but that's not likely to 
happen during driving, unless one of the butterflies has shifted and isn't 
fully closing.

PaulH.

----- Original Message ----- 
> ... I was "idling" at 3000 rpm (60 mph) like I had cruise control.