My car want start unless my foot is on the pedal and then it stumbles in idle and misfires really bad and when i start to drive it, it just gets worse. I have changed the spark plugss and the fuel filter, the fuel pump cuts on and i have also just changed the cap and rotor like 2,000 miles ago. I was thinking it could be a bad injector.

 

It could be internal component failure in the dizzy. Try borrowing a dizzy from someone and trying it out, if the problem goes away then you've found it.

 

i will try that tommrow but my dizzy doesnt have over 5,000 miles on it