How to Change Spark Plugs in a 2002 Chevrolet Monte Carlo

by Ely Hauser

    The 2002 Monte Carlo was a fixture in the NASCAR racing circuit.

    Darrell Ingham/Getty Images Sport/Getty Images

    A quintessential two-door coupe, the Monte Carlo started life in 1970 and remained a fixture for General Motors until its reign ended in 1987. In 1995, it returned as a two-door version of the Chevy Lumina. A 2000 model year redesign saw the Monte Carlo emerge from the Lumina's shadow with its own body style and a standard 3.4-liter, V-6 engine. The 3.4-liter engine continued as the base-model engine in the 2002 Monte Carlo and requires a spark plug change every 100,000 miles.

    Items you will need

    • 0.060 feeler gauge/ gap tool
    • Compressed air
    • 5/8-inch spark plug socket
    • Ratchet
    • Dielectric grease
    Step 1

    Check the gap of all six new spark plugs with a feeler gauge. Ensure they are within 0.002 inches of the recommended 0.060 inches. Adjust the plug gap, as necessary, using a plug gap tool.

    Step 2

    Prop the Monte Carlo's hood open when the engine is cool. Work on one plug at a time, to avoid the possibility of mixing up the wires. Pull a spark plug wire straight away from the cylinder head to remove it from the spark plug. Twist the wire a half turn, if it is difficult to remove. Blow compressed air around the area surrounding the spark plug to ensure it is clean. Remove the spark plug with a ratchet and a 5/8-inch-spark-plug socket.

    Step 3

    Thread the new spark plug into the cylinder head. If you feel any resistance, remove the spark plug, realign it with the cylinder head threads and re-thread it. Resistance means that the spark plus is cross-threading, which will damage the threads of the spark plug bore and spark plug. Torque the spark plug to 11 foot-pounds, using a torque wrench.

    Step 4

    Dab dielectric grease on the inside of the spark plug boot. Twist the boot back-and-forth, as you push it on the spark plug. This spreads the grease evenly around the boot socket.

    Step 5

    Repeat the procedure on the five remaining spark plugs.


    • Inspect each spark plug wire for damage and wear when replacing spark plugs.


    • Alldata: 2002 Chevrolet Monte Carlo V6-3.4L VIN E Service and Repair, Procedures: Spark Plug Replacement

    Photo Credits

    • Darrell Ingham/Getty Images Sport/Getty Images