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Engine light on. Did a diagnostic on it. came back showing a PO 304. Checked spark plug wires which r fairly new. wiggled them around a bit. engine isn't racing like it was before playing with wires. Any other ideas....TIA
Which plug wire go's to cyl #4?

Vehicle: Ford 1998 Escort Wagon 4 cyl

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P0304 Misfire number 4 cylinder

You may want to use another known good ignitiion coil.

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