B4000 2WD V6-4.0L SOHC (2003)
8. Check and adjust the spark plug gap as necessary.
NOTE: All B-Series with 3.0L or 4.0L engines have factory-installed, color-coded spark plugs. These spark plugs are not interchangeable
between the right and left bank.
9. To install, reverse the removal procedure.
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Use a small, clean tool to coat the entire interior surface of the spark plug wire boot with silicone dielectric compound when installing spark
plug wires.
