Modular V10 (6.8l)

Changing spark plugs - advice needed

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Oct 4, 2011 | 10:47 PM

#1

ejgford

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Joined: Sep 2011

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Changing spark plugs - advice needed

I just bought a 2000 Excursion with 60,000 miles on it. I'm guessing this probably would be a good time to change the spark plugs? I doubt that they have been changed previously. Looking in the tech folder, regarding factory procedure changes, I don't understand what "DC Run down" means or "final torque must be reached within 3-25 degrees". Can anybody help me out?

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Old

Oct 5, 2011 | 05:45 AM

#2

JWA

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Joined: Aug 2010

Posts: 21,255

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From: Reynoldsburg, Ohio

There are probably no less than 50 threads about this topic between the V8 and V10 forums----a bit later I'll post a few links to them.

Typically use nothing but Motor Craft or AutoLite Ford spec'd plugs, apply a dab of nickel-based anti-seize to the threads and torque to about 21 ft/lbs. The highly technical description offered in the TSB you cite can scare the bejeebers out of anyone, causing us to think laboratory measuring equipment is the only way to do this properly. Personal hands-on experience by above-average DIY'ers and knowledgeable mechanics all show changing plugs isn't rocket science or brain surgery BUT it does require a bit of patience and following the best practices.

Here's a few to get you started:

https://www.ford-trucks.com/forums/9...-questions.htm

https://www.ford-trucks.com/forums/9...ark-plugs.html

https://www.ford-trucks.com/forums/3...-agsf22wm.html

https://www.ford-trucks.com/forums/1...park-plug.html

https://www.ford-trucks.com/forums/1...g-changes.html

https://www.ford-trucks.com/forums/1...placement.html

https://www.ford-trucks.com/forums/1...our-plugs.html

https://www.ford-trucks.com/forums/2...e-350-v10.html

https://www.ford-trucks.com/forums/1...g-problem.html

https://www.ford-trucks.com/forums/1...ark-plugs.html

https://www.ford-trucks.com/forums/1...pair-kits.html

https://www.ford-trucks.com/forums/1...es-a-plug.html

https://www.ford-trucks.com/forums/9...th-photos.html

Lots of reading there but after sorting through most of it you'll see an emerging common best practice regarding torque.

HTH

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