Remove the old ones and out in new ones. I would suggest you invest in a repair manual. It cost around $12 at most auto parts stores, and will contain the info you need to complete this repair and many others. It will pay for itself with this one repair
As needed CheckSpark can quickly determine the health of your plugs and wires . You can get it on e-bay $24.95
You could change the spark plugs, sprak plug wires, computer chip.
how to change spark plugs on a 97 mercury mountaineer
BuRN
Sounds like the spark plug wires are bad. Replace them along with the spark plugs.
jack up car and change plugs from behind each front tire.
With a spark plug socket and socket wrenches and extensions.
when do you change spark plugs
you change them like every thing else
The temperature sensor goes right on top of where the water hose from the radiator plugs into the engine. it is right next to the spark plugs wires.
3 spark plugs
8 spark plugs