Slant 6 No Spark

Montana Y said

I should point out too that the motor turns over and is getting fuel. Also the ballast resistor is new so it's not that either. I did convert the car over to electronic ignition from points when i swapped engines. (old slant 6 was blown, so I put a super slant 6 in). I checked the wiring several times over when i did it, so I know it's correct (I was very paranoid about getting it wrong). And it ran fine for about 6-8 months after the conversion.

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Some things. You need some jumper "alligator clip" wires, a 12V test lamp, a multimeter.

1....Turn the key to run, measure the coil + voltage. It should be somewhere between 8--10V Much lower something is wrong, and if it reads "same as battery" something is wrong.

2....Crank the engine, read the meter while cranking. Voltage should be "same as battery" and at least 10.5V

3....With key in "run" separate the 2 wire distributor pickup connector. Rig a test gap at the coil HV wire. Take the part of the connector that is the engine bay harness end and tap the exposed terminal against ground. Should make a single snap blue spark each time.

4....Check the ground on the ignition box "ECU." It MUST be grounded (as must the VR)