no spark

[69greenleaf]

I need some help or advice with this problem. I have changed the coil and also checked my distributor and my ignition switch itself. I have gone through the wiring diagrams and check all of the connections into all of the wiring blocks and all of the connectors themselves. still no spark. One thing that is confusing me is that there is an ECM module mounted to my inner fender but i cannot find this module anywhere in any of the diagrams i have looked at. i have checked to make sure everything is grounding the way that it should be and that the pickup in the distributor is spaced correctly, and the rotor and cap on the distributor are brand new. Does anyone have any idea what else could be causing this problem other than a wire being broken in the sheath or a wire grounding itself out somwhere? Any help or advice would be greatly appreciated.

 

[Garys1969RR]

Tell us the year, make and model, would be helpful. Sounds like the ignition box, or ballast resistor could be faulty. On most B Bodies the ignition box is on the firewall near the wiper motor. This is electronic ignition, correct?

 

[69greenleaf]

Tell us the year, make and model, would be helpful. Sounds like the ignition box, or ballast resistor could be faulty. On most B Bodies the ignition box is on the firewall near the wiper motor. This is electronic ignition, correct?

Yes it is electrical and it is a 69 Plymouth satellite.

 

[Garys1969RR]

I believe the electronic ign started in 1972. 1969 had points from the factory. So when consulting the manual, or ordering parts, tell them its for a 1972 400 engine. Charger, Polara etc. I always like to pull the distributor out, hook up the wires, and put the coil output wire near a ground. Turn on the key and spin the distributor shaft by hand and see if you're getting spark. That way you get full battery to the coil etc. The starter isn't competing for voltage. And you aren't draining the battery, or needing an assistant to crank the motor each time you do a test try. That's how we diagnosed my sons Super Bee. Eventually we replaced the ignition box with one from Advance, and now it run great! Make sure the box has a good ground to the motor.

 

[69greenleaf]

We found it! Is was a dirty connection on one of the ballast resistors.