Last week I wrote that my 1974 TR6 was missing and
stumbling under load - just two days after I had
adjusted the valves and actually thought that it was
Well it turns out that I misread the manual and had
the valves opened WAY TOO MUCH. It's a wonder it ran
smoothly at all. So I re-adjusted them but it still
ran like crap - rough, no power, fouling the plugs,
etc. Something else went wrong at the same time.
Weird coincidence? It must be right? So with nowhere
to go I pulled my Pertronix and put the points back
in. VOILA! Runs great.
I called Pertronix and while helpful they seem
convinced that it's not the unit itself since it
didn't completely die (as it would in a failure). The
tech says that I may have a low voltage problem
because the ignition points will run on low voltage
while a Pertronix won't. So I did the checks:
Battery to positive side of the coil (engine off) -
Ignition key on, wire attached from negative coil
terminal to engine ground, voltage read from positive
coil terminal to different engine ground - 8.05 volts.
Resistance across coil terminals with all wires off -
3.5 ohms. It's a Bosch coil (aprox. 20 years old).
Does anything sound out of sorts hear?
Not an electrical kind of guy but I play one in my
The problem is that I really like the Pertonix unit
But I am concerned about the numbers I've been getting
after troubleshooting some of the electrics.
Express yourself with Y! Messenger! Free. Download now.
Check out the new British Cars Forum: