Sounds weak, and putting lighter oil in the dashpot could well make it
worse. Workshop Manual says 40 thou from the chamber face to the lowest
part of the curve on the float. Mixture setting can be tricky, turning each
for maximum idle, then readjusting the other etc is an approximate way.
Lifting pin is another but can be even more tricky to judge, raising by
1/16" should cause the revs to momentarily rise then settle back. If they
stay up it is too rich, if they die without rising too weak. Better when
warm? Choke functioning? Checked fuel delivery at the carbs? Should be at
least 1 pint per minute. On the principle that 90% of carb problems are
caused by the ignition did you fully set this up to? Is the tach dropping
with the stumble? Have you put a timing light on each plug lead and checked
it is is still flashing during the stumble?
----- Original Message -----
From: "Marc" <smarc@abs.net>
To: <mgs@autox.team.net>
Sent: Friday, January 24, 2003 2:38 AM
Subject: SU rebuild ok, need a little advice
> Car starts, runs, and will move under it's own power, but when I let out
the
> clutch and apply the gas, the engine loses power and stumbles. Pumping the
> pedal a bit will allow the engine to recover, and then it pulls well. So,
it
> seems to dislike the initial opening of the throttle.
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