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Old 07-03-2015, 09:18 AM   #11
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Originally Posted by cpaulsen View Post
Wow!! Reading some of these threads kinda made me wonder why the huge labor charges?? Have done my V-10 Superduty 3 times with no problems(one piece plugs)and takes about a hour o so to do. Did a lot of 07-2012 4.6's and a couple of 5.4 in 2003 and 2012 Expeditions and always took less than 2-2/12 hours. Thousand bucks seems like a lot of money!!
They pre quote in the event that they have to extract all the plug tips. A regular plug swap is a couple of hours labor if all goes well and roughly 45 minutes a hole to extract the plug tip. If they're lucky they come out by soaking them, if they're ethical then they'll call you with a surprise lower final bill.

Foad screwed the pooch on that plug design. Surely that issue came up during R&D.
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Old 07-03-2015, 09:37 AM   #12
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I use (Loctite Anti-Seize-C5A) on All my Sparkplugs (Alum or Cast iron Hds)! Sounds like it would save a LOT of $$$ to Remove the Plugs with LOW mileage/Sitting for periods of time,and Apply (Something on the threads)? Do the Exhaust Manifold fasteners at the same time! Youroo!!
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Old 07-03-2015, 11:38 AM   #13
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I use (Loctite Anti-Seize-C5A) on All my Sparkplugs (Alum or Cast iron Hds)! Sounds like it would save a LOT of $$$ to Remove the Plugs with LOW mileage/Sitting for periods of time,and Apply (Something on the threads)? Do the Exhaust Manifold fasteners at the same time! Youroo!!
It's not the threads, it's actually below that. Ford designed the plug with a roughly 1" smooth extension below the threads, an extension that's poorly welded on.

Over time carbon builds up between the cylinder head and the plug, when you try removing the plug that carbon bunches up jamming the plug shell and breaking it off in the head. Champion, which I normally wouldn't run in a lawnmower, came up with a one piece plug that fixes that issue. They're very expensive, but if you intend to keep your vehicle a long time it's worth it.

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Old 07-03-2015, 11:57 AM   #14
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And bear in mind the design of the engine and head is a pretty good design.

It's only the two piece plug, (do they even make that anymore?) that's a really bad design.

My favorite shade tree guy got mine out without breaking a single one at 93000 miles. Of course all the carbon had been blown out with a Seafoam treatment the night before and they soaked all morning with liquid wrench. Then went back in with a bit of C5-A.

All the boots were replaced and all the contacts on the bottom of the coils were scrubbed clean.

Good as new. Better, actually. BTW Motorcraft and Autolite both have a plug where the two halves are welded, not crimped, and either will do nicely.
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Old 07-04-2015, 02:22 AM   #15
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Most dealers go by the flat labor manual and that's how their mechanics get paid if Flat Rate. Book says 2.5hrs then that is the charge, if he gets it done in 1hr you still are paying the 2.5hrs to the dealer and the mechanic is being paid for 2.5hrs, that's how they can flag 70hrs in a 40hr week.
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Old 07-04-2015, 03:13 AM   #16
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5 of 8 plugs broke in my 5.4 V8. It cost me an extra $300 in labor. This was at the 60M mile point. (Yeah, I'm stubborn. I still use M for 1,000 rather than K! K is from computers. And technically it is 1,028 not 1,000.)
Not exactly... The "K" prefix so often employed to denote thousands, is derived from the metric system i.e., K = kilo = 1000.

But back to the OP's thread... ay caramba! I can no longer complain about changing the plugs on the Hemi!
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Old 07-04-2015, 01:11 PM   #17
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Most dealers go by the flat labor manual and that's how their mechanics get paid if Flat Rate. Book says 2.5hrs then that is the charge, if he gets it done in 1hr you still are paying the 2.5hrs to the dealer and the mechanic is being paid for 2.5hrs, that's how they can flag 70hrs in a 40hr week.
Very true, but when stuff starts randomly breaking such as 5 of 8 spark plugs that's when it gets fuzzy. That's why they quote so high before starting, it's always easier to go down rather than up.
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