Genuine Mazda MX-5 Miata Spark Plug

Mazda MX-5 Miata Spark Plug Parts and Q&A

• Spark Plug
  LFJR-18-110
  Q: What tools and steps are required for spark plug replacement on Mazda MX-5 Miata?

  A:

  Replacement of spark plugs involves use of spark plug socket which fits into a ratchet wrench and it is lined with rubber grommet to safeguard the porcelain insulator and gripping the plug on insertion. A wire-type feeler gauge will be required to verify and manage the spark plug gap, and a torque wrench will be required to screw the new plugs to the required torque. When changing plugs, they need to buy the right ones according to the vehicle, in order to fit it into the right gap and replace each plug individually. Check new plugs, checking the gaps between electrodes using the wire gauge; in case of a need to do it, work with the notched adjuster. To prevent any confusion of the spark plug wires, proceed one plug at a time, and loosen the wire and boot by a twisting motion. Use compressed air to clear any dirt in the area then remove the spark plug. Check old plugs against a reference chart to determine the condition of the engine, and treat the threads of new plugs with anti-seize compound to prevent cross-threading. To get the plug in position, a small length of rubber hose can be used to center the plug in place. When tightening, make a twisting movement so as to attach the plug wire. To change the ignition coils on models 2001 to 2005, two ignition coils are to be removed and the plugs replaced whereas in 2006 and above, there are no spark plug wires and each ignition coil is fitted directly on the top of each plug.