[whenning1]

I purchased a 1977 911 approximately three years ago. It ran and drove when purchased. It has sat for the last three years. I tried to start it and it is not getting any spark to the plugs. I have replaced the plugs, wires, cap and rotor. I installed an MSD ignition and coil with a pertronix pickup. I have spark from the coil to the distributor and the rotor rotates as the engine cranks. But, no spark to the plugs. Any ideas or has anyone had this problem?