No Sparks

[joeknott]

My 1999 Blackbird must have a broken wing and I really need some assistance from you tech guys. I wanna come to NEXXT and my bird is sick!

Cylinders 1 and 4 are not sparking

I have 12 volts at the yellow wire at the coil. The bike does run on 2 of the 4 cylinders

Need some help in diagnosing the coil as I do not have the voltage adapted for the BOM

What reading should I get at the yellow wire with the bike running?

Do the coils go bad? Are there any other issues to keep it from sparking?

It does start and FI light does not stay on.

Any info you can offer would be a HUGE help.

Thanks,

Joe

[rockmeupto125]

Joe....swap the coils and check all the connections as you do so . Coils can go bad but its not common. Swapping will make you remake all the connectiona and give you a differential diagnosis of sparking 2/3 instead of 1/4.

[Furbird]

My bike did the same thing and it ended up being a slight bit of corrosion in the connector on the negative connection on the coil. I replaced the end with a standard female spade connector from the parts store and no problems since.

[joeknott]

well it turns out that the "loom" was the entire problem. The horn not working, the turn signals not working unless the front and rear brakes were applied at the same time, AND the 1&4 cylinders not sparking were all fixed when we took out the connector and soldered the wires together. Thanks for your help fellas!