spark plugs

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Jun 16, 2011 | 08:39 PM

m2babbitt

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spark plugs

when should i put in new ones ? we have 35,000 on it know

Jun 16, 2011 | 08:59 PM

tempforce

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From: central texas

100,000 miles or thereabouts...

Jun 17, 2011 | 12:05 AM

phil6608

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From: Stanton DE

Quote:

Originally Posted by m2babbitt

when should i put in new ones ? we have 35,000 on it know

It depends on the year of the truck!
The 3V heads have problems with the plugs breaking off,so its better to change them early. Like 50 to 70K

Jun 17, 2011 | 12:10 AM

m2babbitt

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Quote:

Originally Posted by phil6608

It depends on the year of the truck!
The 3V heads have problems with the plugs breaking off,so its better to change them early. Like 50 to 70K

it is a 2007

Jun 17, 2011 | 12:23 AM

phil6608

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From: Stanton DE

That has the 3 valve heads, but I think they fixed that problem by 07.
Check the TSB on 3V heads to be sure.
If I'm right,,,you should be good to 100K

Jun 17, 2011 | 12:33 AM

phil6608

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From: Stanton DE

I was wrong!
The TSB is for 04 to 08. Sorry.
https://www.ford-trucks.com/forums/7...g-removal.html

I would change them at about 50K if it was me.

Jun 17, 2011 | 06:42 AM

tempforce

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From: central texas

be sure to use the copper anti-seize on the threads and the dual platinum tipped plugs.

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Jun 18, 2011 | 12:13 PM

Aftrmidnite

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Joined: Jul 2003

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After you pull the Coil Paks and boots, Blow out the plug wells with compressed air, loosen the plug a half to three quarters of a turn and blow out again. I'd replace the boots, dont forget to put Dielectric grease, on both ends of the coil boot springs and coil boots.

I did the right bank first starting at plug one, took the truck for a test drive. Took a break while I let everything cool, did the left bank. On plug 8 I used a 1/4" extension, with 3/8" adapters on both ends. You'll need a swivel, and electric tape is a must to hold the socket to the extensions, and extension to adapters. Only mishapt was a dropped a coil pak screw, and I couldn't find it. I Think it was under the intake manifold.