Operation CHARM
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Geo Truck
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1991
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Tracker 4x2 L4-1590cc 1.6L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Tune-up and Engine Performance Checks
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Spark Plug
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Adjustments
Spark Plug: Adjustments
Plug Gap:
Check the
spark plug
gap, to make sure that it is within specification. Spark plug gap should be 0.71 mm (0.028 in.). If not spark plug gap should be adjusted by bending the ground side of electrode.