No, just use a spark plug wrench ,
- Expect spark-plug work to be tedious. If this is your first time,
plan 3 or 4 hours after engine cools (or 1 hour on several days),
allowing 15 minutes per plug. It is harder than changing air filters, fixing flat tires, or starting a mower.
- Consult your vehicle's manual. Look up where your spark plugs are,
how many you have, the correct "gap", and the size socket needed to
remove them. Also write down the vehicle's make, model, and year.
- Visit your local auto parts store. Find (either by looking up in
the provided reference book or by asking an employee) the correct spark
plugs for your vehicle. The store also has socket wrenches, plus
spark-plug sockets (with gasket), and socket-extension rods or
swivel-joints to reach recessed plugs.
- Find out (from the reference book, the packaging, or the employee)
if these spark plugs need to be "gapped". Some modern plugs should not
be gapped (but others can have different gaps, depending on use in
either 6-cylinder or V-8 engines, etc.).
- Park vehicle, turn off the engine, and open the engine compartment,
to cool for hours. (WARNING: After running a car for a long time, the
spark plugs can be the hottest part of engine! While it can require
several hours to cool enough, it can require several weeks to heal
- Collect tools & new plugs (perhaps in a tool-tray). Remember
which direction the socket-wrench switches to reverse/unscrew: wrench
might not be visible when working back plugs.
- Check fit of new plugs inside wrench-socket gasket. If new plugs
stick to rubber gasket, consider removing gasket with screwdriver in
square hole, to just use tape. Like taping screws to a screwdriver, the
socket can be taped to spark plugs (not the threads) with scotch tape,
for easy release once inside the engine. Otherwise, have pliers to pry
the socket off new plugs once installed.
- Using masking tape, mark each of these wires for where they
connect. Don't rely on memory: if interrupted, easy to forget, and
engine can run rough with crossed plug wires. For 8 cylinders, deducing
plug connections is almost impossible (120 choices for 5 wires) -- in
that case you must contact an expert or study wiring guides.
- Remove each spark-plug cable, pulling the caps (to avoid breaking
cable wires). Caps should come loose by very intense twisting/pulling
(avoid jerking/hitting fingers).
- Using a spark-plug socket, remove each plug from the engine, and
replace each with a new spark plug. Don't over tighten (usually just
1/16 turn, after finger-tight).
- Replace the spark-plug cables on the same plugs they originally came from, and remove the masking tape.
- Remove tools near engine (beware the moving belts), close your engine compartment, and start your vehicle.