
How lucky I am in life. I bought this tool just in case I change the spark plugs in my Triton 5.4L 3V. Turns out I didn't need it at all. I didn't break any of the connectors but I ended up having to replace the 2 electrical connectors that connected the ignition coil to the wire harness. Now I don't need a lisle tool because I have new one piece Motorcraft sp546 spark plugs. If I didn't have tools I would probably break 3 of them. I didn't have spare ignition coil connectors and I broke 2 of them, that's all. Advice on removing the two pieces of sp515 I did if you want to do this job. 1) Make 1 spark plug at a time. 2) When removing the ignition coil, spray about a tablespoon of penetrating oil into the chamber and wait 20 minutes. 3) Take a 9/16 swivel head magneto. 4) Perform this step very slowly. Insert the ratchet into the outlet and turn the plug counterclockwise (loose) no more than 1/4 turn and then clockwise (tight) 1/4 turn. Then slowly turn it back a little more than 1/4 turn to the left and 1/4 turn to the right. Take your time. This job will probably take all day to remove and replace 8 spark plugs. 5) Once you've removed the old spark plug, take a new SP546 spark plug and lightly coat the aluminum body near the tip of the spark plug with nickel anti-seize compound and a little on the threads. 6) Secure the new spark plug with a torque wrench if you have one up to 26 lb-ft. 7) Reinstall the ignition coil and then move on to the next spark plug and repeat the process. After you have successfully changed the spark plugs I highly recommend cleaning the throttle body and replacing the engine air filter as you have all the electrical connections and hoses around the spark plug. Throttle body has already been removed.

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