Chevrolet 19354423 Spark Plug Asm,Gasoline Engine Ignition

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Thread one of the new plugs into the hole until you can no longer turn it with your fingers, then tighten it with a torque wrench or ratchet.

Spark plug replacement requires a spark plug socket that fits onto a ratchet, a wire-type feeler gauge to check and adjust the spark plug gap, and a torque wrench to tighten the new plugs to the specified torque. The socket should be lined with rubber to protect the porcelain insulator of the spark plug and hold it while inserting it into the spark plug hole. When replacing plugs, it is important to purchase new ones in advance, adjust the gap, and replace each plug one at a time. Inspect the new plugs for any defects, such as cracks in the porcelain insulator, and do not use them if any are found. Check the gaps on the new plugs using a wire gauge and adjust if necessary. Make sure the side electrode is aligned with the center electrode. To prevent mixing up spark plug wires, work on one plug at a time and remove the wire and boot by giving it a half twist and pulling it off. If available, use compressed air or a bicycle tire pump to blow away any dirt or foreign material around the spark plug area. Use a special socket and ratchet to remove the spark plugs. Compare each old spark plug to assess the overall running condition of the engine. To avoid cross-threading, use a short piece of rubber hose over the end of the spark plug as a universal joint to help align it with the plug hole. Attach the plug wire to the new spark plug by twisting the boot until it is firmly seated. Repeat the process for the remaining spark plugs, replacing them one at a time to avoid mixing up the wires.