Don, sorry for the delay, but I have been away on a business trip.
You did not say what kind of SU's you have.. I have had a similar
problem with HS6 carbs. When things warmed up the connecting link
would expand and bind. This would keep the butterflies from closing
all the way. I just needed to allow for more clearance in the
connecting shaft/linkage. Joe(B)
----- Original Message -----
From: Don Marshall <marshall@nefcom.net>
To: <fot@autox.team.net>
Cc: <fot@autox.team.net>
Sent: Wednesday, November 15, 2000 5:09 PM
Subject: Re: Sticking throttle
> Amici..
>
> I need some help diagnosing a sticking throttle problem I'm having
with the
> TR4 (full race, radical cam, etc. if that has any affect on the
diagnosis)
>
> It runs fine, but when the throttle is released, about half the time
the
> revs will only drop to about 2500 and stick there until I press the
linkage
> at the carb to force it closed. The rest of the time it drops all
the way
> to idle without any problem.
>
> I've disconnected the linkage completely and the springs on the
shafts are
> adjusted tightly to pull the butterflies closed. The carb pistons
are free
> and drop with a good thunk so I don't think they're sticking open.
I
> haven't had the carbs apart to adjust the butterflies yet. There's
a fair
> amount of movement at the shaft, so it might be sucking air.. could
that
> cause it? Anywhere else to look?
>
> Thanks from sunny Florida, where some of us only get to vote once,
dammit.
>
> Don
>
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