My pickup died going down the road its a 1982 Chevy 250 engine HEI ign . Try to shorten this story up. A buddy came out and helped me we ended up pulling the distributor from a engine he had to get me home. I thought it was the pickup assembly in my dist so i got a new one and a dist cap. I put it together and it wouldnt hardly start or run . I then pulled another dis from a parts engine but its wiring was not great so i took that out of the one i tryed to fix. Four hours later i was disgusted . I had even pulled the dis from a engine i know ran. This hole time i had been using the new cap and had even switched the coil. So i finely put my old cap on and it ran ok. I dont know what is wrong with the new cap i am returning it today.