Vehicle make/model 2005 impala Mileage = 43000 Engine size = 3.4 dash lights = NO codes = NO work done prior = NONE work done to repair = NONE tech = ANYONE question = HOW DO YOU REPLACE SPARK PLUGS?
JK: You did not leave your e-mail, so i will just answer here. First remove the plug wires at the spark plugs. Sometimes they stick, and will have to be twisted before they are pulled off. Using the proper size spark plug socket, remove the plugs. Check that the spark plug gap is correct on the new plugs, and install them. Put a little dab of silicone grease in the spark plug wire boot is always a good idea. Also inspect the spark plug wires and ignition coils for signs of corrosion. Re-assemble plug wires to the proper spark plugs/cylinder. The rear plugs are difficult to get to, so you will need a universal socket and extension for those. Be sure not to overtighten plugs or they may crack.
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