You need to have a long socket to get them out and back in easier, if you don't know the firing order, it is easier to just take one out at a time, replace it, hook it back up, then you won't get the firing order messed up, or have to memorize it, also if you don't know where the spark plugs are just follow the wiring, depending on how many cylinders you have, that is how many wires they're is and, spark plugs you need to take out, then all you need is the correct size socket to fit the spark plug, so once you get the first one out, if you didn't already know the size, you will know by the first spark plug you took out, then you can take it to the store and get the spark plugs, once you trace the spark plug wire to the spark plug, unplug it and put the correct size deep wall socket over the spark plug until you retain proper fit, put your ratchet on the socket before or after depending on the reach you have, and take out spark plug, counterclockwise , keep going until each is out and replaced,after you take one out and replaced it put the wire back on, then you don't have to worry about firing order sense you know that your doing one at a time the wires will be in there proper places, it is simple as that, hope that helps. Make sure you have a deep socket, and extension bar for it if needed, and a good ratchet medium size is fine .
Pull off plug grabbing it as close to spark plug as you can. Using socket rotate counterclockwise and remove plug. Be careful putting plugs back in and thread by hand first. Then torque as plug box says as it depends on if you have a washer or not.
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