Re: Thunder Bolt Ignition Issues....
 

Skip the MSD on a stock engine, just one more thing to break.
Check timing with variable advance light to see if your getting advance with increasing rpm. If not, replace the module.
Gary

Re: Thunder Bolt Ignition Issues....
 

Check thhe spark with a st125 spark checker bad about leaking down the coil tower.Fuel supply and cam need checked next.

Re: Thunder Bolt Ignition Issues....
 

Thanks guys.
Grabing my light tonight and heading to the lake....should have thought about that myself. :rolleyes: