• Tiny
  • kim4148
  • 1998 Ford Expedition

Engine Performance problem
1998 Ford Expedition V8 Two Wheel Drive Automatic 122500 miles

How to change a coil pack. I got a reading of a number 8 cylinder misfire and I am trying to change it

Monday, November 10th, 2008 AT 5:07 PM

1 Answer

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,410 posts

Hi: It's really to replace, but #8 is hard to get to. All you need to do is remove the one (I think 7mm or 8mm bolt holding the coil pack in. Once the bolt is out, disconnect the wiring plug to the pack and pull it out. It looks like it will hit the fuel rail, but it will come out. To replace it, just do the opposite.

NOTE: Over the years, I have found it a good idea to replace the plug too. Also, many times the coil pack isn't bad and all that needs to be replaced is the rubber boot that goes from the coil pack to the plug. Check for gray spots where there may have been an arc of power to the engine and not to the plug. If you find that, try replacing the boot rather than a 60 dollar coil.

Let me know if you have any questions. I'll be glad to help.

Positive feedback is appreciated.

Was this
Tuesday, November 11th, 2008 AT 11:49 AM

Please login or register to post a reply.

Similar Questions