Question about Harley Davidson Harley-Davidson Motorcycle Desktop Telephone
If you have an injected bike and it uses an ecu for engine management, it could be that the output transistor or driver circuits in the ecu are bad. if you are sure the rear has no fire that is probably that or if you have twin injectors, it could be a bad injector if you have fire. i assume you have a single fire ignition so you can perform this simple test. both plugs out, pull connector for coil, use jumper wires to connect back to the coil except reverse the wires for the cylinders, roll engine over and observe plugs, if the cylinders switch, then you need a new ecu. this is if you made sure wiring is ok first.
Posted on Sep 07, 2008
I had almost the same thing happen on my 03 sportster it was the ignition modual dont know what year yours is but 03s are bad about messing up harley said they fixed the problem on the replacements
Posted on Sep 02, 2008
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Posted on Jan 02, 2017
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