Looking for a little help. Fitted a Pamco ignition with E-advancer and trying to get the timing right.
Bike is CB450 K0 1964 4-Speed
I rebuilt the carbs and ran them on the old ignition so everything was running fine and synced before I started. Wiring is all correct, coils where changed and spark is good.
I timed the ignition with strobe light based on the instructions and have the LF and F marks dead on the timing mark. Also when I bring the bike to 3000rpm (full advance) the timing mark is right in the middle of the advance marks which tells me my idle is below 1300rpm.
Everything appears to be 100% but the bike is backfiring a lot. Also a lot of carbon on the plugs when I pulled them.
I'm confused as when I first put in the electronic ignition before I timed it it ran pretty good and I had to retard it to get the timing marks correct. The symptoms also sound like retarding ignition so I'm wondering if my timing marks are wrong.
The timing mark I have is like the first photo there is no mark in the middle of the coil.
The timing mark I'm using is the one shown in the first photo at 10o'clock adjacent the cover bolt hole.
In the photo the LT mark is lined up with it (I know this is TDC and not the firing mark).
Before I timed it the F and LF marks where around 11O'clock in the middle of one of the coils like the below photo.
Bike is CB450 K0 1964 4-Speed
I rebuilt the carbs and ran them on the old ignition so everything was running fine and synced before I started. Wiring is all correct, coils where changed and spark is good.
I timed the ignition with strobe light based on the instructions and have the LF and F marks dead on the timing mark. Also when I bring the bike to 3000rpm (full advance) the timing mark is right in the middle of the advance marks which tells me my idle is below 1300rpm.
Everything appears to be 100% but the bike is backfiring a lot. Also a lot of carbon on the plugs when I pulled them.
I'm confused as when I first put in the electronic ignition before I timed it it ran pretty good and I had to retard it to get the timing marks correct. The symptoms also sound like retarding ignition so I'm wondering if my timing marks are wrong.
The timing mark I have is like the first photo there is no mark in the middle of the coil.
The timing mark I'm using is the one shown in the first photo at 10o'clock adjacent the cover bolt hole.
In the photo the LT mark is lined up with it (I know this is TDC and not the firing mark).

Before I timed it the F and LF marks where around 11O'clock in the middle of one of the coils like the below photo.
