> Very rough idle after a normal start of a warm engine, like
> if I park the
> car and pop into a store for 15 minutes. I can keep it going by
> stabbing at
> the gas pedal, and then if I can get some open road and drive it,
> it smooths
> out. Sometimes, it's just hard to start warm. Also, sometimes the normal
> idle starts to deteriorate if I have to sit at a red light for a
> long time.
> I don't think it's flooding out or running too rich. The
> spark plug color
> looks fine. I've got rebuilt ZS carbs with B1E needles.
> I suspect ignition. Currently I am running a stock points
> and condenser
> ignition after some bad luck with a Pertronix. My distributor
> has at least
> .010" shaft wobble. In other words, my point gap can open that
> much if I push
> on it. Could that be a cause?
It's possible, but I don't see any reason you would only notice it under
those conditions.
However, your symptoms sound exactly like a needle valve that is not sealing
properly, and letting fuel leak slowly past it even when the float is at the
top. Could also be that the body of the valve is not sealed to the carb,
and that joint is leaking a bit.
Have you tried cutting the ignition and reading the plugs, when the problem
is happening ?
Randall
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