Mark, I replaced the coil in my TR3 just this week as well; while at
it I also did points, plugs, condenser, and button.
I can't say for sure that the coil I had been running since purchasing
the car (3 years) was bad, or going bad, but the chronic symptoms
were there. On very hot days, in stop and go traffic, where lots of
heat is generated from under the bonnet, I would experience the loss
of a cylinder at random. Checks of the plugs firing at idle would
appear more or less normal but on acceleration, loss of fire to one or
more cylinders would continue. A rest in the shade with the bonnet
raised, while doing some head scratching, would lead to a recovery.
I installed a Pertronix coil...we'll see if that effects a long term
cure.
Ray
Ray McCaleb
ray@raysmg.com
http://www.raysmg.com
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