I have a 1980 tr-7 that has an intermittent problem. It runs perfect for 20-30 miles then runs so rough that it is virtually undrivable( car barely moves when you hit the accelerator) I have ruled out the plugs , ignition wires, cap, rotor and ignition module. I also replaced the diaphrams in the ZS carbs which were worn but not cracked.
Possibilities?
Rich
Possibilities?
Rich