About last fall I noticed a hesitation. This summer I put on new coils and the problem went away, long enough to do a BBG. Then was out in a rain storm and seemed to lose a cylinder. Made it home running on three and after a couple of weeks of good cylinder/bad cylinder found out that the right bank would get weak spark intermittently. I then put one of the old coils back in and it ran great - for a few miles.
I began to see a trend in that every time I messed around in the coil area the bike would get better. With this in mind I removed the small wire harness that connects to the coils and soldered each connector, then verified good and stable connectivity with an ohmmeter. Put the harness back on and now almost non-existent spark. I then bypassed the 3P connector for the coils and soldered the wires. No change.
My troubleshooting reveals battery voltage during crank on the Bl/W wire that is common to the coils. I disconnected the Spark Unit and verified I have good ground to frame on the G wire, good connectivity as well as battery voltage on the Bl/W wire with key on, good connectivity on the Bu/Y wire that goes to the left bank coil, verified the side stand switch works on the G/W wire, verified the neutral switch works on the Lg wire, and have about 450 ohms between the Y and W/Y wires that are the pickup coil for the Pulse Generator.
At this point I suspect the Spark Unit, but really have nothing to go on. I did put my meter on the Bl/Y wire for the left bank coil and can get glimpses of battery voltage that seems to indicate the Spark Unit may be working. I don't have an oscilloscope to verify.
Any help is appreciated.
Dave
I began to see a trend in that every time I messed around in the coil area the bike would get better. With this in mind I removed the small wire harness that connects to the coils and soldered each connector, then verified good and stable connectivity with an ohmmeter. Put the harness back on and now almost non-existent spark. I then bypassed the 3P connector for the coils and soldered the wires. No change.
My troubleshooting reveals battery voltage during crank on the Bl/W wire that is common to the coils. I disconnected the Spark Unit and verified I have good ground to frame on the G wire, good connectivity as well as battery voltage on the Bl/W wire with key on, good connectivity on the Bu/Y wire that goes to the left bank coil, verified the side stand switch works on the G/W wire, verified the neutral switch works on the Lg wire, and have about 450 ohms between the Y and W/Y wires that are the pickup coil for the Pulse Generator.
At this point I suspect the Spark Unit, but really have nothing to go on. I did put my meter on the Bl/Y wire for the left bank coil and can get glimpses of battery voltage that seems to indicate the Spark Unit may be working. I don't have an oscilloscope to verify.
Any help is appreciated.
Dave