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5.4L 3V Spark Plugs Engine Build Dates before 10/09/07

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Old 08-21-2012, 10:31 AM
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Ive heard many cases of them breaking and when people tryed taking them out they fell into the head...
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Old 08-21-2012, 11:02 PM
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My local dealer quoted $410 + tax period. Doesn't matter if none break or all break. Same price. Seems like a no-brainer. Only thing is to decide at what mileage to have this done.
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Old 08-24-2012, 11:44 PM
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I test drove a 2008 F-150 Screw FX4 today that had a sticker on the side of the engine that said 11/20/2007. It had the black boots though, if I bought it, should I be worried that the plugs are stuck?
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Old 08-24-2012, 11:46 PM
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Originally Posted by avsrock78
I test drove a 2008 F-150 Screw FX4 today that had a sticker on the side of the engine that said 11/20/2007. It had the black boots though, if I bought it, should I be worried that the plugs are stuck?
You should be fine. The date is much more critical than the boot color.
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Old 08-31-2012, 04:21 PM
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Has anybody use ROUSH COLDER SPARK PLUG

I was looking online and because of the crappy review motorcraft and autolite get I was wondering if anyone has tried these?
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Old 08-31-2012, 04:40 PM
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Originally Posted by FordFairLane
Has anybody use ROUSH COLDER SPARK PLUG

I was looking online and because of the crappy review motorcraft and autolite get I was wondering if anyone has tried these?
IIRC, the Roush plugs are for forced induction (supercharged) applications.
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Old 08-31-2012, 07:36 PM
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So they wouldn't work in a regular 5.4?
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Old 09-01-2012, 07:46 AM
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Where do you find the sticker on the engine that displays the manufacture date?
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Old 09-01-2012, 07:49 PM
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Originally Posted by Chad81
Where do you find the sticker on the engine that displays the manufacture date?
On the driver side valve cover
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Old 09-02-2012, 07:23 AM
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Well i took my 05 in to have the sparks done. $650 , 2 broken plugs later. Runs so much better
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