A: First of all, at the top of the engine, you will find spark plugs for these vehicles. Replacing them requires a spark plug socket, ratchet, extensions, gap gauge, and torque wrench. You can purchase the new plugs in advance to adjust the gaps and replace one at a time. Also, allow the engine to cool down completely before removing the plugs. Examine the new plugs for defects and adjust their gaps. Use compressed air to clean out spark plug holes. With a socket, remove the old plug and put in new one tightening it with torque wrench Apply anti-seize compound on threads.