testing for miss-fire with electronic ignition - update (pic

Went back to basics: fuel, air, fire. Was getting good stream of gas at carb, air cleaner open and clean. Pulled plug no. 1 & turned over. NO spark.

Put the breaker point ignition parts back in, and it fired and started. But after putting the old ignition parts back, standing on my ear, I remember one of many reasons for my change to the electronic unit.

Sitting here looking at the Pertronix unit, wondering if it has to have 6 volts on it to bench test, to see what failed. Didn"t think to check the ground before I removed the unit, but like I said, it was running great, then back-fired and quite.

Edward

Link

Link

http://i136.photobucket.com/albums/q181/a_lead/340%20Feb%202008/P2160160.jpg

The Pertronix Ignitor units can only carry a limited amount of primary current, about the same as points.

If the primary resistance of the coil is too low, and no ballast resistor was used, that would explain the problem.

On the other hand, I've used LOTS of the Pertronix units over the years, and every now and then, one just takes a crap, for the heck of it.

Edward