Ignition/Tuner/ECM/Fuel InjectionNeed advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.
what brand and number plugs are you running? other than non stock HD plugs sometimes cause weird cels.
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NGK DCPR7E #3932
Originally Posted by Zanthamos
Disconnect the PC5 and reconnect the main harness back to the ECM, if you continue to see the issue it is not the PC5 if you lose the issue then PC5 is most likely culprit.
Check the codes. I’d suspect injector wire broken inside the insulation (semi- common).
This is my guess as well since we know internal broken injector wires are common in those bikes from the injector wires being ty wrapped to the frame. The engine shakes which works the wire back and forth annealing the wire inside until it breaks. Once broken the outer sheathing will keep the connection...until the wire’s sheathing warms up and allows the broken wire to separate effectively shutting off the affected cylinder. Let the bike cool off and the wire makes connection again...until it warms again.
Bob
02-09-2019, 11:46 AM
