Electronic spark control box

[Wheelie]

I lost spark to plugs 1 and 4 on the '80 GS1000. Fortunately, I had an extra spark control box to swap in. As I was diagnosing the problem I noticed that the resistors in the spark plug boots were black soot carboned up and did not give the same readings (basicly open) as the nice shiney clean ones on cylinders 2 and 3. I bought replacements from Bike Bandit.
The question is, will bad resistors in the spark plug boots cause the spark control box to fail?

Thanks,
Steve

[t3rmin]

Possibly. But have you considered that the resistors were the point of failure themselves? I had a lot of ignition problems with my 650 until I replaced those boots. Best deal is the NGK boots at z1enterprises.com.

[Wheelie]

That was my question. Did the bad resistors in the boots take out the spark control unit?

[fgh]

That was my question. Did the bad resistors in the boots take out the spark control unit?

They probably could if the charge that went through the lead to the plugs couldn't find its way to ground. It could go back thruogh the wiring to the unit and fry it. Of course it could also be coincidence.