[Mgs] Cruise control!!!

[Monte Jane Morris]

Paul,

I do notice a  bit of slack in the throttle cable, but wouldn't too much
slack here only cause hesitation on acceleration? The throttle shaft is
sitting at the correct location for idle.

I'm suspecting you're poppet valve cause (I haven't been out to move the
idle screws yet). Don't some people solder them closed?

Thanks,
Monte


On Sun, Apr 13, 2014 at 4:47 AM, PaulHunt73 <paulhunt73 at virginmedia.com>wrote:

> 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.