It is a pointless ignition. I just changed the fuel filter to make sure the one I had was not bad, started the car and afrer 15 minutes it shut itself off again. I looked at the float level in the center carb and it was at the bottom of the hole so I am guessing it is not fuel so do I try a new modual on the fire wall next? Advance Auto parts told me this morning that a coil is either bad or good no fixing itself for a while and then going bad again.