Robert Blubaugh wrote :
> It was quite rough due to
> needed carb adjustments. Several short dirves with different
> carb adjustments were bringing it around
Just out of curiosity Rob, what are you using for carbs ? Setting the stock
SUs at warm idle should be fine, no driving required, unless you've made
modifications elsewhere. Racing cam, perhaps ?
> Surely an occasional arc through the
> plug gap would at least cause a cylinder to fire or at least back
> fire or sputter. I GET NOTHING!
> This is really frustrating, but I won't give up!! TS7690
> WILL RUN AND DRIVE AGAIN!! Any suggestions for additional things
> to try would be appreciated.
> Thanks in advance for any suggestions.
Some thoughts :
What are the voltages on the coil terminals with the points closed ? Just
flashing a light isn't good enough.
What coil are you using ? If it's some high performance, externally
ballasted coil, a few short drives around the block may well have been
enough to toast those new points.
Have you tried swapping for a "known good" condenser ? Ideally, one that
you've seen run ... brand new ones are sometimes bad, and your symptoms
sound a whole lot like a bad condenser. BTW, there's no point in trying it
without a condenser ... it simply will not run without one.
Have you double-checked the phasing of the distributor ? Turn the engine to
TDC and check that the rotor is pointing directly towards the #1 (or #4)
terminal in the dizzy cap. If it's halfway in-between terminals, the spark
may not make it across.
If you were at least occasionally getting a backfire, I'd suspect the dizzy
is timed 180 degrees out (ie pointing to #1 when #4 is ready to fire).
Have you checked for spark directly at the coil HT terminal ? Could be a
bad wire from the coil to the cap, especially if you used carbon core wires.
You didn't mention trying several different rotors ... there seems to have
been a rash of bad rotors in recent years and failures are very difficult to
detect visually. The definitive symptom of a bad rotor is spark at the coil
(with the HT lead to the dizzy removed), but no spark at any plug wire.
Randall
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