You can test their resistance with an ohmeter to see if within spec. It is so much per foot and if exceeds that, replace.
What is spark plug's position? tell me.
Count the number of spark plug wires.
Spark plug wires are made in the way when it's really hard to connect wires in a wrong order, they have certain length and a special holder which prevents mistakes during repair process.
123456 is the firing order ...or, just call a dealer. They will tell you.
Since it is "yours," open the hood/bonnet and look for not more than 4 spark plug wires (4-cyl), or not less than 6 spark plug wires (front and/or rear sides of engine) (6-cyl).
Your local parts house will be able to tell you which plugs and/or plug wires you need for your car. I suggest buying a good set, but there's really no need to break the bank. Install the wires one at a time to avoid mis-wiring problems. Unplug the wire from the plug and the coil pack and install the new one. Repeat. FriPilot
if the spark plug wires go down the middle of the valve cover, it is DOHC. The Intake Manifold will also say Duratec. The OHV motor will have the spark plug wires connecting on the bottom of the head near the exhaust manifolds.
I can tell you that i bought my first and last set of Xact spark plug wires, been on the car for 2 months, had to take the valve cover off the car, everyone of the plug wires either broke off around the spark plug or just straight out broke, right now I'm trying to figure out how to get 2 of the pieces out from around the spark plugs, so i can put a different companies wires on the car, do not buy these cheap junkie wires, you will regret it later! In 35 years of working on cars I've never seen anything like this happen!
If there is a question about it, replace it. They are not terribly expensive. If the plugs are starting to go bad, replace them all. And the spark plugs wires too. An ounce or prevention is worth a pound of cure.
Count the spark plug wires that are located under the black plastic resonator box. There are small aluminum heat sinks located on top of the spark plug harnesses, count them.
Keep the spark plug hooked up to the car but don't plug it into the engine chamber. Have a friend start the car and see if the plug sparks at the end. Also, if your engine misfires a lot than you most likely have a bad spark plug.
pull a spark plug one at a time . leave it attached to the plug wire and hold the plug right next to the frame or something that will make a good ground. be sure and hold the spark plug wire boot and not the plug itself or youll get a shock you wont soon forget. i even use pliers myself. as the plug is grounded to the frame crank the engine and look for a bright blue spark . if you have spark your coils are working . no spark could be coils, plug wires, etc