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After all the trouble I've read about with spark plugs breaking, I chickened out and went to talk to my dealer about having mine changed. They said they have the same problem, and often will break every one. So, I said, ok, how much to change them? They have a flat service fee for doing this, as long as they don't break any plugs. If any plugs break, then its $80 an hour.
Since Ford has a problem with a Ford product, and I am paying a Ford trained technicians for a service, then why should I have to pay extra if Ford breaks their own faulty plugs on what is a very routine service. Not backing up their own prone-to-breakage product and passing the cost on to the consumer. This seems like a win-win for Ford. Heck, breaking every one is to their financial advantage. If they weren't paid extra for breaking them, I wonder how much better they would be at not breaking them?
Funny thing is that my cousin is a mechanic for a private shop, and he told me he has changed many 2004 on up plugs, and he so far has only broke 2, and it was a high mileage truck. And the broken ones came out with the extraction tool. He said he will run the truck till it is a little warm after turning the plugs about a qtr. turn and using penetrating oil, and they will tightly come out.
Ford doesn't get the money, the local dealership owner does. I can tell you from experience that breaking a plug adds approximately 5 minutes to the change. If they break one and attempt to charge you $80 for a full hour of labor they're full of crap. Ask them if the flat fee includes adhering to the plug removal TSB. Or if the technician opens the hood and just starts turning wrenches.