go get a tune up kit, Plug points and condenser. Easy to put in. Like 13 bucks locally. Bet this cures your problem. If not all that is left is the coil. It is a little more pricey. I don't know the price as I have not replaced one in years. Probably the condenser wet the bed or points are dirty though. Steve
OOPS don't want to sound stupid but check kill switch and wire for short.