I've been occasionally getting a cyclinder #1 mis-fire on my Stang, and I'm guessing it's because it still has the original spark plug wires after 10 years and 160K miles. I did replace the plugs about a year ago, so I'm guessing they are fine. What I was wondering is....how easy or hard is it to replace the spark plug wires on a '99 V6? Any help is appreciated.

 

If you did the spark plugs, extremly easy. It takes a couple of minutes tops. Just make sure you get the correct wire connection on the drivers side because the plugs don't line up in order on the coil pack #1,2,3 front to back like they are orientated in the car.