in a way, i guess you could say that it happened all at once. this started, if you could believe just by changing the engine oil. then the truck would not refire. in which i found out that the points was out of adjustment. to make a long story short, i believe i may had made progress today. i went ahead and replaced the distriburtor cap, rotor, spark plugs, wires and fuel filter. It would almost acelerate, before once again falling on it's face. My belief is now that the timing is too far advanced. i retarded it some, and the truck did pick speed like it should. Things were looking up for the old truck breifly until the radiator popped.