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2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 engine

View Poll Results: Did you break a plug and did you use kroil
No break, I used kroil 5 26.32%
No break, I did not use kroil 6 31.58%
Break, I used kroil 2 10.53%
Break, I did not use kroil 6 31.58%
Voters: 19. You may not vote on this poll

Did you break a plug? Use Kroil?

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  #1  
Old 10-30-2011, 02:58 PM
Ted928 Ted928 is offline
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Did you break a plug? Use Kroil?

If you changed your plugs, did you break any? Did you use kroil? I think the people who used kroil (as opposed to some other penetrating oil) have been very successful so let's see what the poll says.

No break, did use kroil
No breaK, did not use kroil
Break, did use kroil
Break, did not use kroil
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Old 11-01-2011, 08:49 PM
Ted928 Ted928 is offline
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79 viewers so far but no one is polling. Why???
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Old 11-02-2011, 06:31 AM
elrodalonzo elrodalonzo is offline
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There are 10 million posts on this topic, I think people are polled out!
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Old 11-03-2011, 12:23 PM
gmcgilli66 gmcgilli66 is offline
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Dealership changed out plugs. Broke 4!!!!
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Old 06-18-2016, 03:37 PM
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DavidHobley OurWorldUS davehobley
I would like to know the answer to this one. Want to change the plugs today, but cannot locate this AeroKroil by Kano... :/
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Old 06-20-2016, 02:08 PM
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I cracked the plugs about a 1/4 turn, then sprayed Sea Foam in and let it word for about an hour. Got 3 plugs out whole.
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Old 06-20-2016, 02:46 PM
bleoh bleoh is offline
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I ran Techron through my fuel system for several tanks of gas getting ready to do the plugs. Cracked plugs a 1/4 turn and used PB blaster on a warm engine, let soak 10 minutes or so. Then used a 3/8 electric impact gun on all but the two rear plugs (no room for my impact). On those I just took my time loosening the plug a little at a time until it felt tight or "funny" at all. Then I would jump to another plug and work on that and come back to the rear plug after the PB soaked in more. All 8 of my original plugs came out in one piece from my 2004 with 96K miles on it.
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Old 06-22-2016, 09:24 PM
thousand_mile_stare thousand_mile_stare is offline
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I broke none. Followed the Ford TSB. Used Supertech carb cleaner available at Walmart.
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Old 06-30-2016, 02:01 PM
jhayden jhayden is offline
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I ran 2 tanks w/ techron, warmed engine , 1/4 turn plugs loose drivers side. sprayed w/ pblaster, whole side came out in 1 piece. rewarmed engine, did the same for the other side, none broke. Engine had 105k on it, at the time. I have found magnetic plug socket works best for me, in this application.
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Old 07-01-2016, 12:19 PM
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I've changed the plugs in my '07 F150 5.4 3V twice, 95,000 miles and 191,000 miles. Both times in the three fill-ups before the plug change I added a can of Seafoam, then with a cold engine I cracked the plugs about an 1/8 turn and poured Kroil into the spark plug well. Waited two hours and then, carefully, removed the plugs. If any showed resistance, I would screw it back in then screw it in and out, each time screw it out a little further until it eased up. Once they were all out, I reinstalled the PCM to spin the engine over to clear out the Kroil that dropped into the cylinder.
I used nickle based Never-seize on the new plugs.
So far, sixteen plugs and none have broken.
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