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Spark Plugs and Wires

What is the proper procedure for changing spark plugs in a 1999 Mazda 626 ES?


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2005-01-06 11:11:04
2005-01-06 11:11:04

Remove the plug wire from one plug. Do this carefully by twisting the boot on the plug and then pulling it off. Only pull the boot and not the wire. Before removing the plug use compressed air to blow out the area around the plug. Remove the plug and and replace with the exact same OEM plug which has been gapped to the factory specs. This is listed in the owners manual and under the hood on a placard. Before inserting the plug, coat the threads with anti-seize compound. Tighten the plug to the proper torque. Over or under tightening is a no no. Call the dealer for the torque specs. Replace the plug wire until you feel it pop or know that it is connected fully. Move to the next plug and repeat. Only do one at a time in order to prevent getting the wires mixed up.

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