1984 2.8 v6 no spark.

[Tyler uppy]

After solving the no crank issue with my ranger, I'm having a seemingly complex no spark issue. First off, I have no spark on any spark plug, I traced that back to the dizzy wires and replaced them because they were crusty. which did not solve my issue. Next I checked my ignition coil, hooked it up to a spark plug and got no spark as well. last night I checked the resistances in the coil and they looked normal. The coil is getting 12 volts when the key is on from a red wire. I have no idea what is going on or what to check next, Please help. What things could be preventing me from getting any spark?

 

[franklin2]

Move your meter (a testlight is better) from the + of the coil to the negative of the coil. Leave the black lead on a good ground. While holding it there, crank the engine. If you have a testlight from the coil negative to ground, it should blink fast as the engine cranks. A digital voltmeter will be hard to read, but it should flicker when cranking,

That is the distributor module turning the negative of the coil on and off. That is what creates the spark in the coil. Assuming the coil is not turning off and on, suspect the module.

If your truck is original, the ignition module will be mounted on the side of the distributor. If your truck has been modified to the duraspark system, then the module will be on the driver's side fender.

Another quick check, you can pull the distributor cap off, and crank the engine and see if the rotor is turning. If not, you might have some sheared off teeth on the distributor, never good and can be a sign of a locked up oil pump.

 

[Tyler uppy]

Move your meter (a testlight is better) from the + of the coil to the negative of the coil. Leave the black lead on a good ground. While holding it there, crank the engine. If you have a testlight from the coil negative to ground, it should blink fast as the engine cranks. A digital voltmeter will be hard to read, but it should flicker when cranking,

That is the distributor module turning the negative of the coil on and off. That is what creates the spark in the coil. Assuming the coil is not turning off and on, suspect the module.

If your truck is original, the ignition module will be mounted on the side of the distributor. If your truck has been modified to the duraspark system, then the module will be on the driver's side fender.

Another quick check, you can pull the distributor cap off, and crank the engine and see if the rotor is turning. If not, you might have some sheared off teeth on the distributor, never good and can be a sign of a locked up oil pump.

Thanks, I will check it out tonight.