I was told to replace my spark plugs

This guide can help help diagrams below to help you on your car.

https://www.2carpros.com/articles/how-to-change-spark-plugs

What do u have for engine (DOHC SOHC )

1.Open hood and remove both windshield wiper pivot arms.
Remove 8 plastic retainers from cowl vent screens to inner panels by turning 1/4 turn counterclockwise.
Remove 5 clips retaining cowl vent screens to inner panels.
Remove left and right side cowl vent screens from vehicle.
Remove 4 bolts retaining ignition coil 4 and position out of the way.
2.Disconnect negative battery cable.
Ensure left and right side cowl vent screens are removed.
Disconnect electrical connector from ignition coil and remove 4 ignition coil hold-down screws.
Remove ignition coil to access spark plugs on cylinders No. 1, 2 and 3.
Disconnect electrical connector from Intake Manifold Runner Control (IMRC) actuator.
Remove IMRC mounting screws, and lay IMRC actuator aside to access spark plugs on cylinders No. 4, 5 and 6.

NOTE: Spark plugs must be marked so they may be installed into the same cylinder from which they were removed.
3.Disconnect ignition wires from all spark plugs.
Loosen spark plugs and use compressed air to remove any dirt or foreign material from spark plug areas of valve covers.
Remove spark plugs.

Hi Tami,

Here are a couple videos. I assume you are asking because you may have to remove the intake to do the rear? There are tricks but sometimes it is easier to just remove it.

Let me know if you need anything else. Thanks

https://youtu.be/akuAEO7YXwU

https://youtu.be/Wpb-_0wfRnI

Start with the basics. Verify with a spark tester that the spark plug is not getting spark. Since your ignition system fires the cylinders in pairs, if one fires and the other does not, there is a possibility of a shorted coil pack.

This guide will help you change the spark plugs correctly.

https://www.2carpros.com/articles/how-to-change-spark-plugs

Also a compression test would be in order. Bad compression will also cause a cylinder not to fire.
Smoke from the tailpipe can also indicate a problem with a head gasket or intake manifold gasket.