Cadillac 19301811 Spark Plug Asm

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The spark plugs are located on the sides of the engine. To replace them, you'll need a spark plug socket, various extensions, a gap gauge, a plug wire removal tool, and a torque wrench. It's best to buy the new plugs in advance, adjust them to the proper gap, and replace them one at a time. Make sure to get the correct plug type for your engine, which can be found on the Emission Control Information label under the hood. Allow the engine to cool completely before removing any plugs. While waiting, check the new plugs for defects and adjust the gaps. Remove the spark plug wire from one plug, pulling only on the boot at the end of the wire. Use compressed air or a bicycle pump to blow any dirt away from the spark plug hole. The spark plugs are often difficult to reach, so a socket extension will be necessary. Remove the plug by turning it counterclockwise. Compare the old plug with a chart to get an indication of the engine's running condition. Apply a thin coat of anti-seize compound to the threads of the new plug, then thread it into the hole. Tighten it with a torque wrench or ratchet. Before attaching the plug wire to the new plug, inspect it. Attach the wire using a twisting motion until it's seated on the plug. Repeat this process for each remaining plug, replacing them one at a time to avoid mixing up the wires.

Attach the wire using a twisting motion until it's seated on the plug.

It's best to buy the new plugs in advance, adjust them to the proper gap, and replace them one at a time. Make sure to get the correct plug type for your engine, which can be found on the Emission Control Information label under the hood. Allow the engine to cool completely before removing any plugs.