i have a 1992 Isuzu pickup truck with fuel injection.got to a red light today and it killed on me. tried to start it and had to hold gas pedal to floor. when i let go of gas pedal, it killed on me again. i changed fuel filter and it still kills on me. i pull the spark plug wire off the distributor and seen a lot of corrosion in distributor cap.do yo think that is my problem?its a 4 cylinder 2.6 liter