A friend of mine is having some difficulty with his TR6 which I
have been helping him diagnose via email. I addressed his
question regarding the ballasted coil and I do not believe this
is what is going on. Initially I had him run through the ignition
system and he found that two of the wires were bad. This correct
most of his problems that he originally presented (also replaced
points, plugs and coil and appear to be set up correctly). Before
I continue to pursue some other directions I thought it might be
helpful (to me) to seek some other thoughts from the list.
Doug Nicotera wrote:
> hope all is well. The tips you've given so far have helped. I set up the
> carbs and checked the ignition but still have a problem, which I am
> thinking might be ignition relatd.
> The car starts and idles well, in fact it will idle strongly for hours if I
> let it. But when I drive it, sometimes only 1/2 mile or so, it begins to
> run roughly, almost like some cylinders aren't firing. If I let it rest,
> start it up and do the same thing, the same thing happens.
> My broher took a look and questioned the coil (which is new). Can a bad
> coil cause this? (fluctuate when a load is applied?) Could the question of
> a ballast vs non-ballast coil be the cause?
> In that regard, I replaced the coil as per the comm. # recommended by TRF
> in the catalog. If I replaced it with the wrong item how could I tell? My
> car's a '73--If it is a ballast system where do I look for a resistor to
> I'm sort of confused.
> thanks once again.
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