Spark plugs turn black
Spark plug back tip do I replace my jets
SOURCE: MY 1990 HARLEY SOFTAIL HAS NO SPARK BATTERY IS NEW AND IT TURNS OVER
Either the stator plate, or coil is not getting power. First thing I would check would be power from the coil with an ohmmeter.
SOURCE: no spark
alrighty, I had the same issue with my bike. It took days of tracing the issue with a volt meter and I discovered an intermittent short that would "fry" my coi. This made the bike not start and when I replaced the coil, because I had removed the old coil and moved the wires the issue disappeared for a short time. It is known that SOMETIMES when the coil is mounted the two wiresthat go to the coil somhow get stretched. This over time cause an intermittent short and the coil is rendered "dead". The Fix: 1.get a replacement coil. 2.you need 6 inches of #18 wire 3. two aluminum wire splicers and two aluminum circle fittings for the coil posts. 4.take off the old coil. 5.cut back the wires that go to the coil about an inch. 6. using the aluminum splicers splice the wires making them about 3 inches longer. 7.splice in the aluminum circle fittings. 8.mount the new coil. 9. fire the bike up. Enjoy riding.
SOURCE: No spark on my Harley
How are you checking your spark? On the newer computer controlled engines, there is a "compression sensor". If you take the plugs out and try to check for spark like we used to do, you won't get a spark. Put your plugs back in and then use a set of test plugs to check your spark.
If you're still not getting a spark, check for voltage at the primary side of the coil.
Testimonial: "Thank you for the info. I didn't realize that you could test the spark the old way."
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