A:Greg, this may be due to a bad fuel regulator. First thing we would suggest is to test for a Harley Davidson EFI fuel leak. You should be able to rent the fuel adapter that you will need from the dealer. If you have the adapter, you can use just about any fuel pressure gauge. The fuel pressure should remain steady 55-62 psi at any rpm. If your fuel pressure reading is correct, we would head towards the possibility of a bad injector.
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