06 GT plug change success!

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05-11-2013, 02:31 PM

#21

Sonic Mustang

Banned

Join Date: Feb 2013

Location: USA

Posts: 545

Quote:

Originally Posted by Lifter583

The expansion of the aluminum head is greater then the steel of the plug at higher temps...so the plug will naturally be a slight bit looser and the carbon buildup less solid...it seems a plausible theory to me and it worked well in my case...

I think you missed my point. I agree with you. I also think few Ford dealers will follow the TSB exactly. Can you imagine Ford techs letting the car cool down to ambient temp overnight just to change plugs?

05-11-2013, 08:35 PM

#22

kenthicken

4th Gear Member

Join Date: Aug 2006

Location: Los Angeles, California

Posts: 1,277

Quote:

Originally Posted by kenthicken

Going to tackle mine this Saturday... have all the tools ready to go, just in case... extractor included.

Just finished. On the plus side, never needed the extractor! All 8 came out, although 5 and 6 were a little tough going for a while, but they came out. Plugs had a fair amount of carbon on them.

Let the car sit overnight, followed the TSB exactly, and nothing broke. Some plugs just took more effort than others. Job took about 3.5 hours, but I was taking my time and I had to remove the supercharger inlet arm (covered 7 and 8).

All in all, not too bad a job.

05-12-2013, 08:50 AM

#23

Lifter583

4th Gear Member

Thread Starter

Join Date: Apr 2008

Location: North Idaho

Posts: 1,440

Quote:

Originally Posted by Sonic Mustang

I was with you...just explained my mechanic friends's thinking on not letting it cool...he seemed to indicate it was normal practice among the guys who actually do the work...so I am betting you are correct in your thought...