> Yes of course! The first suspect for this symptom is a worn throttle shaft
> and/or bushings. I learned that here. I forgot to mention that I did all
> the tests for worn bushings and they seem to be ok.
In that case, I'd be looking at the linkage itself. My problem turned out
to be "ball" pivots that were worn oblong. When I snugged up the mating
sockets, they would bind at the limit of movement where the wear was the
least. Made me much more religious about feeding them a drop of oil every
year or two.
If you can duplicate the problem by turning and releasing the throttle shaft
directly, try it with the linkage disconnected. If the problem goes away,
then it has to be the linkage. There is supposed to be a separate spring to
return the linkage, the springs on the throttle shafts should only have to
turn the shafts themselves.
Randall
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