<VV> Stumbling acceleration

[Bill Elliott]

First, I'd dump the platinum plugs. While some people use them 
successfully (the majority doing so seem to use electronic ignition), 
many other people do not. The cheap Bosch Super (or its replacement the 
Super Plus) runs better for the vast majority of people than any of the 
pricier Boschs. The most benign of the "Bosch platinum symptoms" are 
exactly the sort of hesitation that you are describing.

Next, I'd unhook and plug  the vacuum advance to see if that made a 
difference. Often the vacuum advance causes big dwell changes in even a 
slightly worn distributor and that can result in the sort of symptoms 
you are seeing (as well as dwell varying with rpm... something else to 
check...)

Bill


Cash Case wrote:

>Hi guys-
>I'm hunting down a stumble in the acceleration on my '65 140.
>When I'm accelerating I get a miss at about third throttle.
>I've checked to make sure all the cylinders are firing.  The Carbs seem to be working, but I could be wrong.  Both function well.  The accelerator pumps on each carb works.  They seem to be drawing the same amount of air.  I have Bosch platinum plugs with the four short terminals around the center electrode on the spark plugs.  So no over the top terminal on them.  If I'm light on the pedal, I can get it to smooth out as I go beyond the 1/3 throttle, but it is still somehwat rough.  
>Anyone got an idea which things I should check first?  Should I be looking at a points problem?
>-Cash Case
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