Spark Plug Torque
Spark Plug Torque
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Joined: Jan 2003
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From: 3rd Rock
...Welcome to Ford Truck Enthusiasts! If you have a minute check out the Guidelines, it will help you to navigate through and understand FTE.
Try this link for your answer
http://www.nology.com/torque.html
We are pleased you have chosen the best source for Fords!
Enjoy FTE
…..See you on the boards.
Try this link for your answer
http://www.nology.com/torque.html
We are pleased you have chosen the best source for Fords!
Enjoy FTE
…..See you on the boards.
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
Junior User
Joined: Apr 2004
Posts: 94
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I didn't have the patience to go thru "Racerguy"'s 11-page link, but hopefully embedded in there is a torque value. The thread size of the plug indicates the use of between 84- and 168-inch lbs of torque. That's INCH lbs, NOT foot lbs!!!! Remember, these are ALUMINUM heads. Ford recommends the use of a nickel-based anti-seize compound on the plug threads. (However, I use copper-based). Many sparkplug websites say reduce the torque by 20% when "wet"; I only got the "Ford-salute" (shrug of the shoulders) when I polled Ford dealers about wet/dry torque values. I settle the issue by going midway between the hi and low values. Do NOT use motor oil on the plug threads!!! The heat will turn the oil to coke and you'll have a tough time getting them out later.
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
The instructions are on the first page of my link, the rest is more tips and questions 
When I cut and pasted the link into the above post the cat was sleeping on my arm so it was too hard to type. How's that for a good excuse?
The plugs should be torqued dry to approx 13 ft.lbs. (average depending on what year manual you're looking at) or just reasonably snug with a normal length ratchet.
As far as I know Ford still recommends not using any anti-seize on the threads. A Ford engineer I was talking to said it was because of heat transfer problems and that it could cause spark problems as well. I'm not sure I really buy that but I have always put in plugs dry and never had a problem with doing that.
When I cut and pasted the link into the above post the cat was sleeping on my arm so it was too hard to type. How's that for a good excuse?
The plugs should be torqued dry to approx 13 ft.lbs. (average depending on what year manual you're looking at) or just reasonably snug with a normal length ratchet.
As far as I know Ford still recommends not using any anti-seize on the threads. A Ford engineer I was talking to said it was because of heat transfer problems and that it could cause spark problems as well. I'm not sure I really buy that but I have always put in plugs dry and never had a problem with doing that.
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Daviddc114
1997 - 2006 Expedition & Navigator
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Nov 5, 2006 10:35 PM
