The cam is broken in, It's an MSD HEI distributor, I already replaced The module and have tried several different caps and rotors and have a brand new set of wires on. I am getting spark, but only at the cable end, and it's a very weak spark, If i put a plug in the wire and ground it out I get nothing. I've heard of people having wiring issues that cause enough power loss that the plugs won't fire or something along those lines. It ran great up until late October then it wouldn't start.