Question about Motorcycles
Probably retard it a bit but I don't think it is the timing
You say it runs and backfires but if the timing was too far advanced it would backfire on starting and be difficult to start
I suspect the fault to be electronic ---like a loose wire on the coil , faulty coil, faulty ignition control module, loose wire at ignition switch, loose ground wire , loose ground wire on battery
look for something that is making and breaking contact at random as that action induces a spark at the wrong time
Posted on Feb 27, 2016
Testimonial: "I replaced failed Cdi with used unit, the replacement is for 80-81, mine has 82a suffix replacement has 80 suffix, could the unit be designed with different timing curve?"
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