Message text written by "John A. Simmons"
>My TR6 has developed a miss recently that is starting to worsen. Checked
the plugs and found that some were burning better than the others. One
plug
(#2) was black (like it was burning to rich), if removed right after a run
it would be damp with gas (guess it wasn't burning). First thing I did was
swap with a plug the was burning correctly (#6) and the same thing would
happen, came out damp with gas. Next I used a Gunston Flash tester on the
end of the plug wires and found that #2 didn't generate near the spark as
#6
(3 wires generated excellent spark, 2 average and 1 bad). So I swap wires
with #6 to see if that was the problem. Nope, same result. Had an extra
coil, tried it, same problem. I have ordered new cap, rotor, condensor,
and
points and will replace them next. Bought a timing gun and found someone
will teach me how to use it next week. Question is, is there any thing
else
I should be looking for that would cause low voltage like this? Thanks for
any help.
John, '71 TR6
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John
Two things come to mind. 1) is the front carb set more rich than the rear?
Are #1 and 3 plugs also looking wet and black? 2) check for wobble in the
distributor shaft. Check the point gap at all six positions and see if
there is a great difference.
It is also possible that you have a carbon track from #2 electrode to
ground on the inside of the cap but since you have already covered that
possiblility I won't bring it up.
Dave
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