I had my 89 ZR4 with cyclone motor detailed and now has a miss fire , I knew it was probably from water. I was going to change the plugs and wires anyway , so I did that and cyl 1 and 2 aren't really firing. if you put a plug in the wire of 1 and 2 and ground it the plug sparks ,seems like the plug isn't sparking when its screwed into the head. I didn't cross the wires as I removed 1 wire at a time and replaced with new one , for shits and giggles I did a compression test and got 160 across the board . Any ideas or where to check next
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