Uthud
Member
UPDATE: Major issue appears to be fixed, but still working on backfire when starting.
This time, the Dealership replaced the jackshaft and pinion, inner-primary jackshaft bushing, clutch basket, and related gaskets, seals, etc without charge. This was the third time they installed a Drag Specialties clutch basket, so they also used Drag pinion and jackshaft kit, and it does sound better while cranking than it did when using OEM pinions.
I asked them to replace the cam position sensor with the OEM part ($244, dang), and to verify correct VOES operation and timing. The service manager also recommended replacing the battery, which was a 450 CCA battery from the local farm store. So, I agreed to have them install a HD battery ($180, dang, dang).
My bike runs great, so I don’t think I need a new ECM after-all. The kickback issue seems to be resolved. For years, when starting a warm engine, I have opened the throttle slightly. So now I have been starting warm without touching the throttle; no backfire. Cold engine starting has never been a backfire situation; I give the throttle a couple of twists then leave it alone, full choke and hit the button. It’s always started right up.
Big thank you to Frenchie and BWG for their input.
This time, the Dealership replaced the jackshaft and pinion, inner-primary jackshaft bushing, clutch basket, and related gaskets, seals, etc without charge. This was the third time they installed a Drag Specialties clutch basket, so they also used Drag pinion and jackshaft kit, and it does sound better while cranking than it did when using OEM pinions.
I asked them to replace the cam position sensor with the OEM part ($244, dang), and to verify correct VOES operation and timing. The service manager also recommended replacing the battery, which was a 450 CCA battery from the local farm store. So, I agreed to have them install a HD battery ($180, dang, dang).
My bike runs great, so I don’t think I need a new ECM after-all. The kickback issue seems to be resolved. For years, when starting a warm engine, I have opened the throttle slightly. So now I have been starting warm without touching the throttle; no backfire. Cold engine starting has never been a backfire situation; I give the throttle a couple of twists then leave it alone, full choke and hit the button. It’s always started right up.
Big thank you to Frenchie and BWG for their input.