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Isuzu
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1990
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Trooper II L4-2559cc 2.6L SOHC (4ZE1)
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Spark Plug
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Service and Repair
Spark Plug: Service and Repair
Spark plugs
should be replaced every 30,000 miles.
Torque
spark plugs to 18--25 ft. lbs. Refer to Tune Up Specification chart for spark plug gap.