1986 nissan truck v6 it has no spark.I was told the coil was replaced a year ago

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Do a test for spark at the plugs. Remove one of the plug wires from a plug and hold it near grounded metal. (If the plug end has a long insulated shroud, you may have to improvise to get ground close enough to the end of the wire.) Have someone crank the engine while you watch for spark. If you get an 1/8" or so of spark, that should be enough to fire.Check the distributor cap inside for signs of cracks or carbon arc tracks.Also, check to see that the little carbon contact for the center terminal is in place; without that you can have spark but it won't get to any plug wires.It's rare, but a rotor with an internal short or carbon tracks on the surface can kill the spark before it even gets to the cap.

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