Dick, as usual you are right again. The carb piston on the carb that is
backfiring (once in a while) on acceleration does appear to lag behind (just
slightly) than the other carb. What adjustment would be made to the linkage
that would affect the movement of only one carb' piston? The linkage that
joins both carbs is tight.
Thanks
Jim
75 Tr6
80 TR7
Kissimmee, FL
Sally or Dick Taylor wrote:
> Jim---A weak spark on any cylinder could cause the backfire, as this
> (sparkplug) came back on line. Since you didn't have this before, let's
> assume that the new carbs are out of sync somewhere.
>
> With the air cleaner off, see if both of the carb pistons rise equally
> as you raise the rpm by hand. (Hopefully it won't backfire in your
> face!) If they don't rise equally, the problem is likely in the linkage
> where both carbs are joined. If they DO rise equally, the needles may be
> not flowing the same amount of fuel. (Here, the Haynes would come in
> handy) If you know your way around inside of these carbs, it's not hard
> to even them up with the adjustment screw down inside the damper tube.
> If this is Greek to you, better wait for the Haynes Manual, as all this
> is explned with pictures and a step-by-step.
>
> Major auto suppy stores carry stuff to spread between exhaust pipes to
> stop the leaks, so you don't have to weld them shut. Try to avoid
> welding, as a lot of repairs calls for removing the exhaust, and you'll
> want to do this in sections.
>
> Dick T.
> '73
--
Jim Henningsen
email:jdhenn@cfl.rr.com
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