Join Date: Sep 2000
Location: Rowlett, TX USA
I'm new to this, so please don't laugh. Took my '69 Z11 out for a spin today and the car was backfiring (popping) at lower speeds 35-45 mph as I was cruising . Needless to say, I felt like an idiot. My first inclination was to replace all the plugs and set the timing (points disttributor). I pulled up and hood and checked the plug wires, etc... I did however notice that the valve cover to air cleaner hose was disconnected. Could this have been the problem?