Ah yes, could also be the old twisted/bent shaft as Carl mentioned... didn't
think
of that... But I guess when your own shaft is bent or twisted... oops! Did I
say
that outloud?
Greg Burrows
Vicki Burrows wrote:
> The only thing I can think of is that you have a vacuum leak somewhere. Have
> you tried the old " spray carb cleaner around the gaskets" trick? Did you
> inspect the carb when you took it off... looking for any place where it could
>be
> cracked, missing a seal (like around the shaft), bolt, etc... I am grasping
> here, but I can imagine no other explanation. What does the plug look like?
> Greg Burrows
>
> linob wrote:
>
> > Hi All,
> > I'm hoping that someone can shed some light on this rather frustrating
> > situation, I'll try to be brief:
> > I have a U20 with old style solex's, I was originally having trouble with a
> > compression loss in cylinder #4, trouble shooting lead to trouble in the
> > head, pulled the head, had everything freshened up by a competent machinist
> > with experience with these motors, head is now OK, but still having
> > difficulties with #4 cylinder. I switched carbs front to back, and now have
> > trouble with #2 cylinder, which isolates trouble with that carb. It doesn't
> > seem to flow as much air as the other carb - my airflow meter confirms this.
> > I've checked, cleaned all the jets, gaskets, venturies,ect and still can't
> > seem to get an improvement in airflow. I can easily get everything to idle
> > properly and have followed the manual for proper balancing, which I can get
> > it to do by over adjusting the one carb, but pulling the spark plug wire at
> > #2 cylinder doesn't make a difference in engine performance. Any ideas?
> >
> > Thanks in advance...
> >
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