This is strange, Im trying to hear the roar of open headders (just installed) and my 1971 dart will only pop out the carb? I have tripple checked my plug wires and they seem ok. I had the rotor off and the cap sitting on the manifold when I raised the engine for installing the headers so I dont think I dammaged cap or rotor. What the heck could have gone wrong? What else may I be overlooking? Thanks so much for all the help.