You didn't list it as being checkerd or replaced. Check out your distributor
cap. Look for scoring and cracks. Also check the rotor and the rotor contact
point. I had similiar problems with my GT-6 and replaced these items and all is
well.
Jerry - 1968 GT-6 MK1
Jack R. Clark wrote:
> Listers,
>
> I have a continuing problem. I am still getting some
> stumbling when accelerating hard, or accelerating
> in high gear at lower rpms. This only happens after
> the car has warmed up to top operating temp.
>
> The following is a list of what I have done:
> '74TR6 68,700 miles
> 1. Replaced points, condenser, plugs (bosch platinum),
> plug wires, Lucas sports coil, (connected without
> the ballast resistor in effect), plug gap at .035
> 2. Rebuilt carbs, Grose jets, air flow equalized,
> mixture a little rich.
> 3. Using SU-Zenith Damper oil from Victoria British
> 4. Timing using strobe is at 10 degrees BTDC with
> vacuum retard removed and 3-4 degrees ADTC with the
> vacuum connected.
> 5. Replaced all major vacuum lines
>
> Observations:
> a. when rebuilding carbs, one Temp Compensator plunger
> moved freely, the other would move, but tended to bind
> along the walls of the TC housing. I did not touch the
> adjusting nut! Just cleaned and replaced.
> b. Again, no problem initially, only when normal temp is
> reached
> c. Idle is a little rough, just a jerk every now and then.
> d. Runs at speed better than it ever has, pulls up to
> 100 mph with more to spare, and I can drive in a way
> as to prevent the stumbling, but I would like to fix
> the problem.
> e. Noticed that no vacuum in the line coming from the
> thermostatic switch on the radiator hose(clogged up?),
> so I connected directly to the small line feeding the
> switch. Vacuum retard works well, but do not know if
> the vacuum is too strong, or too weak.
> Since I have replaced everything else, I feel it may
> be the Temp compensators. Or is it the thermostatic switch? (none of
> the big three have them in stock) What do you think?
>
> Who ever can figure this one out is definitely the King of e-mail diagnosis!
>
> Thanks
> Jack '74 TR6 CF23352
|