How to Replace the Ignition Coil in a Mazda6

The ignition coil in a Mazda6 converts low-voltage power from the battery into a high-voltage spark to trigger the spark plugs. A damaged Mazda6 ignition coil may cause an oil leak, irregular idle, stalling or fail to turn-over the engine. The distributorless ignition system (DIS) in the Mazda6 means you'll find the ignition coil bolted directly to the engine.

Instructions

1

Put your safety first. Mazda recommends you disconnect the negative battery cable and set your emergency brake any time you do work on your car.

2

Pop the hood and locate the plug hole plate. You need to remove it to access the Mazda6 ignition coil. You should be able to lift the plate off.

3

Determine whether you have a turbocharger on your engine. The 3.0L (Aj) and the Mazdaspeed6 engines both use a turbocharge, while the 2.3L (L3) engine doesn't. If you have a turbocharger equipped, take off the charge air cooler.

4

Disconnect the electrical connector from the Mazda6 ignition coil. You may need to release a lock by pressing down on a clip or squeezing the electrical connector.

5

Remove the damaged ignition coil and replace it with a universal or stock replacement ignition coil.

6

Reconnect the electrical connector and tighten the fasteners with a torque wrench to 54 inch pounds.

7

Put the plug hole plate back on and reconnect the battery.