Suspect an Ignition Problem
I've got an old '86 work sled I use for servicing remote wireless access points in the mountains.
After starting it up for the first time this winter I ran it around the yard, seemed fine, then it abruptly stopped with a very loud backfire.
Took the carb apart and cleaned it but it seemed fine, put it back together, started on the first pull, ran 10-15 seconds and then quit with a loud backfire.
Replaced the coil and plug, it started right up, then the same thing-ran for 10 seconds and died with a loud backfire.
Both the headlight and taillight quit working late last winter, so I suspected the voltage regulator was gone, but it didn't affect running the sled.
My question is this:
Would a bad voltage regulator affect the ignition circuit?
I assume the regulator is the small black box that has 2 leads coming out of it-one to the lights, one to the coil-or is that the CDI box?
Where is the CDI and would that be the likely suspect?