Question about 2004 Harley Davidson XL 883C Sportster Custom
Coil has 12v on both sides cranks no spark 1990 883
Posted by Anonymous on
Test the primary coil resistance on your coil. Disconnect all the wires going to the small terminals (primary) on your coil. Using a good ohmmeter on Rx1 setting, test the resistance between the two small terminals. You should read somewhere between 2 and 3 ohms. If you read more, the coil is bad. Before you do this test short out both leads of the ohmmeter and if the reading is not zero you will need to write down or otherwise remember the number and subtract it from the reading you get from the primary circuit test or you will have an incorrect resistance reading for the primary wires because you will also be reading the ohmmeter internal resistance and/or the wire and lead resistance added to the primary wiring resistance.
You can also test the coil by leaving the "hot" wire on the coil and replacing the other side (ground side) with a short piece of wire. Turn the ignition on and temporarily ground the short piece of wire you put on the "out" (ground) side. When you take the wire away from the ground, (which will collapse the primary current into the secondary) you should see a spark at the plugs if it is a wasted spark system or at one of the plugs if it is not a wasted spark system. If you have current to both sides of the primary of a two part coil both plugs should get a spark whether wasted spark system or not as you are energizing both sides of the primary and collapsing both into both secondaries at the same time when you remove the ground wire from the cylinder head ground.
I do not go back that far but if 1999 is similar ignition to 2001 then: Check your pick-up sensor located inside the timing cover, behind the adjustor plate. If the filament is not intact you will have no spark.
A defective coil, cam position sensor, or stator will also cause a no spark condition.
Posted on Oct 16, 2014
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Posted on Jan 02, 2017
check your ignition fuses but i think your problem is between your module and ignition switch if you got safty switches on there any one of them can cause that also.
Posted on Dec 06, 2008
Disconnect the small wires on either side of the spark plug wire tower. Then, turn the switch on and check the wires for voltage. If you don't have any voltage, check the "Run/Stop" switch. The voltage for the "Run/Stop" switch comes straight from the "ignition" circuit breaker under the seat. The voltage to the circuit breaker comes directly from the ignition switch. The voltage for the ignition switch comes directly from the battery.
If you have voltage to the coil but still no spark, it sounds like your timer/pickup is bad on your engine. It is located under the small round plate on the right side of your engine camchest cover.
Posted on Jan 10, 2010
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