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Spark (I-Mark)

Check for spark at each spark plug wire using a high-output spark tester. Check spark plug wire resistance on suspect wires. See the I-MARK PLUG WIRE RESISTANCE  table.

I-MARK PLUG WIRE RESISTANCE

Cylinder/Wire Ohms
No. 1 6440-15,030
No. 2 5290-12,340
No. 3 4810-11,220
No. 4 3350-7820
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