Sometimes it will start and run for awhile and then just die on you. It will sometimes start right back up but lately it will not restart at all. I checked out the coil it was not with in specks. Installed new coil. Still will not start. I can only get it to spark one time when I try to start it. If I turn the switch back off and then back on and try to start I will get one spark only again. Could the problem be the ignition pulse generator or the DC-CDI unit? Thanks for any help.