Changing the spark plugs
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Post Fiend
Joined: Sep 2005
Posts: 5,955
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From: Ohio
Changing the spark plugs
I was thinking about changing the spark plugs. 98,000 on the original plugs from the factory. But im worried about the spark plug shooting out after tightening the new spark plug in. Its an 01 V-10. Do you think i have to worry about this? I heard about the earlyer v-10s, but didnt the 01 and up get the new heads to with more threads to stop this? Should i just let my local ford dealership mess with this? One last question, what type of sparkplugs to you guys recommend for the v10?
Post Fiend
Joined: Jun 2003
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From: NE Texas
I could type alot of stuff for you - but it's much better if you do a search and print out what's already here about it. It will save alot of time for you and you'll get a quicker response and pics to boot!!! 
Junior User
Joined: Dec 2006
Posts: 86
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From: Prairie View, Texas
autolite APP 103 gapped .54 torqued 160 inche pounds
https://www.ford-trucks.com/forums/4...th-photos.html
https://www.ford-trucks.com/forums/4...th-photos.html
Last edited by jutahh1; Jan 30, 2007 at 03:04 PM.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
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From: Long Island USA
There's an official plug-change thread, just talked about in the past few days...
Ford supposedly went to long-thread heads late in calendar-year 2002.
I have seen pictures of the older '99 heads with very few threads.
When I did the plugs in my 2001, manufactured 10/2000, I could swear I have long-thread heads - I looked. But I'm not sure anymore.
Ford supposedly went to long-thread heads late in calendar-year 2002.
I have seen pictures of the older '99 heads with very few threads.
When I did the plugs in my 2001, manufactured 10/2000, I could swear I have long-thread heads - I looked. But I'm not sure anymore.
Senior User
Joined: Jun 1999
Posts: 126
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From: Tryon, NC
Don't trust them
It sounds easy to just have the dealer change the plugs but what do you think they do when they run into a few that don't want to come out? Ship It!! I've seen more than a few Tritons that have OE plugs in the back holes and newer ones up front.
Posting Guru
Joined: Apr 2006
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Originally Posted by ed foster
It sounds easy to just have the dealer change the plugs but what do you think they do when they run into a few that don't want to come out? Ship It!! I've seen more than a few Tritons that have OE plugs in the back holes and newer ones up front.
Its the V8 Monza spark plug change all over again!
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Elder User
Joined: Mar 2003
Posts: 589
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From: Villa Rica, GA
It really isn't hard to change the plugs on the v-10. The back ones are a little hard to get to but not impossible. Get a torque wrench and you will be fine. Even without one as long as you don't over-tighten them you won't have a problem. Theres a chance of some moron working on your truck at the dealership and screwing it up or just not changing some of the plugs like was mentioned before. I vote do it yourself and use the motorcraft plugs.
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FTE Leadership Emeritus
Joined: Jul 2002
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From: Long Island USA
Originally Posted by chuck641
It really isn't hard to change the plugs on the v-10. The back ones are a little hard to get to but not impossible.
Post Fiend
Joined: Jun 2003
Posts: 5,643
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From: NE Texas
I've heard horror stories after a plug blowout that the dealer installed.
I think I would get it in writing from them that they would be responsible for all plug failures including thread damage. This means COP, boots, plugs, connectors and wiring.
Do I think they will sign such a document? No.
Don't mean to come across so negative, but some techs will act ignorant because they are told to do so. Unless you personally know a tech at the dealer, I would have to change the plugs myself, following the FTE procedures to a TEE.
I think I would get it in writing from them that they would be responsible for all plug failures including thread damage. This means COP, boots, plugs, connectors and wiring.
Do I think they will sign such a document? No.
Don't mean to come across so negative, but some techs will act ignorant because they are told to do so. Unless you personally know a tech at the dealer, I would have to change the plugs myself, following the FTE procedures to a TEE.
Logistics Pro
Joined: Jan 2002
Posts: 3,733
Likes: 38
I helped change plugs for a bud some years back and one was real stubborn... eventually it break loose..
Guess what... the previous owner keep all the receipts and those plugs had been installed by a dealer... what is significant you might ask?
The stubborn plug was tight because it was held into the stripped threads of the head by JB Weld!
Guess what... the previous owner keep all the receipts and those plugs had been installed by a dealer... what is significant you might ask?
The stubborn plug was tight because it was held into the stripped threads of the head by JB Weld!
Post Fiend
Joined: Jun 2003
Posts: 5,643
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From: NE Texas
Originally Posted by Fredvon4
The stubborn plug was tight because it was held into the stripped threads of the head by JB Weld!
What is sad (probably said this a thousand times already) is the fact that we know this design is poor; we know that with just a minor revision in the thread depth, this would have never been a problem.
My words of wisdom for today: A problem is only a seed from which sprouts a solution. Write that down....
Of course there will always be instances where someone cross-threads a plug, be it in cast iron or aluminum, but ignorance is bliss. All we can do here is encourage everybody to pay attention to detail. Stop, take a breath (or a brew) and realize that with just a little more patience and knowledge of the problem - we shall overcome.
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