John-
pull out a plug, re-connect the plug's HV lead, lay the plug on
the valve cover ( or make a ground connection to the plug's body in other
way), and have someone crank the engine, If you do not see a spark,
it's probably your points....
Pop off the dizzy cap, observe the points- rotate the engine til they're
closed. pull off the coil's HT lead, stuff a short piece of wire ( any
type will do) into the HT socket, and bend the wire so it comes to
within about 1/4" from the side of the head or valve cover. Using an
insulated poker, flick the points "open" and observe the spark jumping
from the temporary wire to the motor. No Spark? see if the coil has
power on the + (Lo Voltage) side, then see if there is the same
voltage on the other side of the coil, with the points still closed. If
it reads the same on both sides of the coil, either your points are fried
or the little flexi-wire that connects the points to the dizzy's feed thru
is broken.
If you have spark in all the right places, but still none at the plug's
gap, they may have broken down internally
(Especially common in Chumpions) and you'll need a new set of NGK's or
Bosch plugs.
Good luck!
Bob Westerdale
59 3A TS36967
My 1966 TR-4A won't start. The car is in the midst of a rolling
restoration and doesn't get much use. (a couple of hundred miles in four
years.) Last month I started using it regularly and it developed a miss
which got steadily worse. The miss didn't happen in constant speed
freeway
driving, but became more and more evident on trips with a lot of starting
and stopping - even with the engine fully warmed up. I'd come off the
freeway and when I started up the hill toward home, it would cough and
sputter furiously. Now it won't start at all.
I've checked the plugs, distributor cap and rotor, all of which are
clean, but the points were filthy with what looked like dirty engine
oil. One spark plug wire seemed loose. There is nothing noticeably wrong
with the fuel system. I tightened the spark plug wire and cleaned the
points, but it still won't start.
Any suggestions on how to approach this problem?
Thanks.
John Cowan
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