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Home >> Isuzu >> 1988 >> I-Mark LS >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - NIPPONDENSO >> Testing >> Spark Test
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Spark Test

Remove any spark plug wire and hold wire about 1/4" away from ground. Crank engine and check for spark. If spark occurs, check ignition timing, spark plugs, fuel system, and engine compression. If no spark occurs, check coil primary circuit for short circuit or loose connections. Check pick-up coil air gap. See ADJUSTMENTS  in this article.