How to Safely Change Your Spark Plugs and Ignition Coils?
1, Pop hood, and disconnect battery. Remove any intakes, covers, etc. until can see the ignition coils.
2,Going one cylinder at a time, unclip the coil from the wiring harness and remove any securing bolts.Pull up on the coil until it pops out.
3, Use spark plug socket to remove the old plug.
4, After checking the new plug’s gap, start hand-threading it back into place.
5,Once you’re absolutely sure you haven’t cross-threaded it, use your torque wrench to secure it.
6,Take the new coil, connects to the spark plug, and securely re-install it.
7,Screw the retaining bolt back in, once again starting by hand and finishing with the torque wrench.
8,Re-install any intakes, covers, etc. you’ve removed and re-connect the battery.