Need the year and engine size to answer the question.
Look on cap,motor head, sticker on bottom of hood or owners manual
Spark plugs, air filter, wires ( if equipped ).Spark plugs, air filter, wires ( if equipped ).
Pull the spark plug wires off the spark plugs. Remove the spark plugs with a spark plug socket. Install the new spark plugs and put the spark plug wires back on. I recomend replacing the spark plug wires as well. If replacing them, just remember that the new wires are hooked up the same ways that the old ones came off.
Disconnect the battery, remove the spark plug wires and covers, and remove the old spark plugs. Next, put in the new spark plugs, attach the covers and spark plug wires and reconnect the battery.
Replace spark plugs, wires, air filter, fuel filter, spark plug wires and PCV valve.
First you remove the spark plug wires from each of the spark plugs, being careful not to wreck the wires. then you get a deep well socket that fits around the spark plugs. then you take out each of the spark plugs. get the new spark plugs and insert them in the spark plug holes. tighten them up and put the spark plug wires back on the plugs. I find there is more room to work if you jack up the front of the truck and remove the wheels. With a long extension you can easily reach five of them thru the wheel well. The one behind the steering shaft on the drivers side is a challenge.
you may need a tune up. the wires or your spark plugs
If you mean, what if your spark plug wires were crossed up, the engine would run terrible if it ran at all.
Wires and plugs constitute a tune-up. DO NOT gap the plugs, it will ruin the platinum coating.
Do this one plug at a time, and reconnect that wire so as to not get wires mixed up. REMOVAL Remove spark plug wires from spark plugs with a Spark Plug Wire Remover tool, pull outward on the boot with a slight side-to-side twist. Loosen spark plugs and remove any dirt or foreign material from spark plug areas of cylinder head with compressed air. Remove spark plugs. INSTALLATION Inspect and adjust spark plugs. Spark Plug Gap: 0.042" to 0.046". Install spark plugs. Tighten spark plugs to 9-20 N.m (7-15 lb in). Connect spark plug wires to spark plugs.
As with any tune up you need to replace the spark plugs and wires for all cylinders. Make sure that when you replace the spark plugs with new ones, that you gap them to the correct spacing and that the wires supplying the power, are secure.
Get a tune up. Replace cap and rotor, spark plugs, spark plug wires, and make sure the wires are in the correct firing order.