B2500 SE Regular Cab 2WD L4-2.5L VIN C (1998)
Spark Plug: Service and Repair
1. Remove the spark plug wire from the spark plug.
2. Loosen the spark plug.
CAUTION: If reversing existing spark plugs, mark their location before removal.
WARNING: Always wear eye protection when using compressed air.
NOTE: Use compressed air to remove any debris from the spark plug well before removing the spark plugs.
3. Remove the spark plug.
4. Inspect the spark plugs.
NOTE: Refer to the chart to determine the condition of the spark plugs.
5. Check and adjust the spark plug gap as necessary.
NOTE: Platinum-enhanced spark plugs should not require adjustment throughout their service life.