Engine idles smooth and sounds good. I’m getting the flashing CEL and P0302 code (misfire on cylinder 2) when the engine is reved and reaches 1800-2000 rpm. Plugs and wires are relatively old, but not high mileage. I swapped the #2 and #4 plungs and the miss stayed the same. I also switched the #2 and #1 wire. The miss did not move.
I have a few questions:
1. How do I test the coils to eliminate them as being bad?
2. Although they don’t seems to be bad, should I replace the plugs and wires anyway since they are getting old?
Edit to add: Truck in question is a 2000 DII.
I have a few questions:
1. How do I test the coils to eliminate them as being bad?
2. Although they don’t seems to be bad, should I replace the plugs and wires anyway since they are getting old?
Edit to add: Truck in question is a 2000 DII.
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