Gentleman and Ladies, heres my issue new cam, installed, new carb 340 engine, Ive got fire at the plugs, but im not getting any backfire thru carb,no signs its firing,yet i can see it fire, at plug,i had noticed some burns on the top of the cap at the coil wire so i replaced cap, rotor and coil wire, i also checked the wires by rotating them each forward on the cap and back one having repositioned the them 3 times , moved it 180 degrees, same story. No sign of firing off a cylinder