The recommended spark plug replacement interval for Mitsubishi Mirage is 63,000 miles on engines that use iridium spark plugs. If copper spark plugs are used, replace the spark plugs every 30,000 miles.
Park the vehicle on level ground and allow the engine to cool down. Pull the hood release under the driver's seat and open the hood.
Disconnect the negative terminal of the battery. Loosen the 10mm bolt on the terminal and pull it out to disconnect the battery terminal. Disconnecting the positive terminal is not necessary once the negative has been disconnected.
Remove engine cover/air filter/hoses above or connected to the top of the engine. Use a clamp plier and screwdriver to remove the clamp on the hoses. Then use a ratchet wrench with extension to remove the nuts holding the engine cover.
Remove the hose connected to the engine cover. Use a clamp plier and screwdriver to remove the clamp and spring clamp on the hose. Disconnect the mass airflow. Just press on it to unlock, then pull it out.
Unplug the three electrical connectors from the ignition coil by pressing it down and pulling out the connector.
Press the electrical connector, then pull it out to disconnect them.
Remove the ignition coil. Remove the 10mm ignition coil bolts using a ratchet wrench and remove the ignition coil by moving it up and out. Inspect the ignition coil if there are cracks or breaks in them.
Removing the 10mm ignition coil bolts.
Remove the spark plug. Use a 5/8 spark plug socket to loosen the spark plug and remove the spark plug from the engine using the magnetic pickup tool.
Loosen the spark plug by using a spark plug socket.
Spark plugs should be pre-gapped. It is recommended to verify the spark plug gap before installation.
Install the new spark plug and torque them to specification. When installing the new spark plugs, do not allow the new spark plugs to drop down as this may lead to the spark plug tip damage.
Reinstall the ignition coils. Do not switch the connectors between ignition coils.
Reinstall engine cover and other hoses that were disconnected. Reconnect the battery terminals. Negative should be connected last.
M14 （Gas） 20N・m If the cylinder head material is cast iron
M14 （Gas） 17.5N・m If the cylinder head material is aluminum
M18 （Gas） 30N・m If the cylinder head material is cast iron
2012-2020 Mitsubishi Mirage
2013-2020 Mitsubishi Attrage
2004-2012 Mitsubishi Colt
2004-2006 MCC Smart Forfour
2012-2019 Mitsubishi Mirage
2013 Mitsubishi Attrage
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Anti-seize compound is useful when replacing spark plugs in aluminum cylinder heads.
Mitsubishi Mirage Spark Plug Ignition Coil Replacement Guide This guide provides step-by-step instructions on how to change the spark plugs and ignition coils to Mitsubishi Mirage equipped with the 1.2L three-cylinder engine.