QuestionI have a Ford 302 with a 2 barrel motorcraft carb. This is a low mileage engine that has developed a miss through out the driving speeds. I have replaced plugs, plug wires, distributor cap, rotor, rebuilt the carb, removed and cleaned the fuel tank, replaced all fuel filters, checked all vaccume hoses, retorqued the intake bolts reset the timing and it still has a miss.Do you have any suggestions? Thank you for your time..
AnswerBased on what you have replaced, there is only two things left...
1. My first guess would be a bad Ignition Coil. The Ignition Coil is the source of ALL power and if its not generating enough power, it will miss and even shut the engine down completely sometimes.
2. The other possibility is a bad fuel pump. If the pump is not pumping fuel at the correct pressure anymore, you are not getting enough fuel to the plugs. The pump maybe missing a stroke every now and then, which would cause the plugs to fire, but no fuel to burn.
