John,
George makes a good point here. Sounds like something is wobbling in
the ignition.
A loose rotor it will also cause and or add to that problem. While
you're checking for worn distributor bushings check to see if the rotor
is tight. And I mean frog-ass tight. There should be no wobble at ALL
when it's on the shaft. If it wobbles replace it with a Lucas rotor
cause almost all the after market rotors don't fit tight enough. Ask me
how I know. If you don't have a Lucas rotor handy you can shim the
shaft very carefully with some black electrical tape, just be sure you
don't leave any excess tape that will cause a problem with something
else and make sure you don't use too much tape or the rotor won't go
completely down on the shaft. You're shimming the side of the shaft but
not the top. The rotor has to go all the way down on the shaft.
Good Luck
Bud
George Richardson wrote:
>
> I can think of one other thing you might need to check. If the
> distributor shaft bushings are worn, the shaft may be free to rock back
> and forth, affecting the point gaps at for some of the plugs. It's also
> possible to have the distributor lobes worn down unevenly, although I've
> only seen this couple of times over the last 20 years.
>
> "John A. Simmons" wrote:
> >
> > 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
> > Berekely Springs, WV
>
> --
> George Richardson
> Wyvern - '57 Triumph TR3, TS15559LT -
> http://www.merlingroupinc.com/tr3.htm
> Griffin - '71 Triumph Stag - undergoing restoration
> Pikachu - '75 Triumph TR6 - undergoing repair
> Kitty - '83 Jaguar XJ6 Vanden Plas - Daily Driver
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