Notices
1999 - 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines
Sponsored by:
Sponsored by: Real Truck

started sparkplug swap

Thread Tools
 
Search this Thread
 
Old May 27, 2011 | 08:12 PM
  #1  
Gordon-0's Avatar
Gordon-0
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 352
Likes: 0
started sparkplug swap

i plan to utilize the extra long weekend to finally change my sparkplugs at 185000 miles (it was done previously at around 90K)
i removed all the coilpacks and boots and noticed two things.
7 of the boots were remarkably clean and pliable. to the point where i considered leaving them in and returning the new ones i had just bought... of course i wont. but it crossed my mind.

the second thing was that one boot, one lonely boot, was so brown and red and charred that it nearly fell apart getting it out.

what does this mean?

the charred one was not the back passenger side one (the second most difficult one to get to) or the one under the fuel pressure regulator (the most difficult one to get to) so im wondering why it was in such bad shape considering that it was relatively to get to and was most likely changed with all the rest at 90K

any ideas?


anyway, i sprayed out the holes multiple times with compressed air, then put a bit of WD40 in the holes to loosen the threads overnight and called it a day... it was getting dark
 
Reply
Old May 27, 2011 | 10:08 PM
  #2  
Fordfanatic4life's Avatar
Fordfanatic4life
Postmaster
Joined: Oct 2008
Posts: 3,924
Likes: 6
From: Richmond BC
prolly got mud/dirt or other contamination under it at one point.. left in there to dry and rot the rubber boot would be my guess..
 
Reply
Old May 27, 2011 | 11:21 PM
  #3  
Gordon-0's Avatar
Gordon-0
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 352
Likes: 0
so its not from the plug arcing or something terrible like that?
thats good.

now that i have the fuel rails off, is there a good way to get them back on?
on the last car i took fuel rails off, there was a clip on the injector to hold it into the rail so they all came out of the intake.
in this case, there is no clip so half are in the intake and half are in the rail.

do i just wet the rubber bushings and push?
 
Reply
Old May 27, 2011 | 11:36 PM
  #4  
A/Ox4's Avatar
A/Ox4
9 ECHO 1
15 Year Member
Liked
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
Club FTE Silver Member

You waited almost 100,000miles to change them out? I sure hope you put in some good spark plugs. Use some anti seize stuff in there too. I think your 5.4 is the 2V so it shouldnt be too bad.
 
Reply
Old May 28, 2011 | 12:12 AM
  #5  
Gordon-0's Avatar
Gordon-0
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 352
Likes: 0
well they have a 100k change interval so it shouldnt be a problem
 
Reply
Old May 28, 2011 | 12:14 AM
  #6  
A/Ox4's Avatar
A/Ox4
9 ECHO 1
15 Year Member
Liked
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
Club FTE Silver Member

Really? When I had my 5.4 it was 75k then a TSB reduced that to 50-60k. Given that was the 3V with two piece plugs.
 
Reply
Old May 28, 2011 | 12:23 AM
  #7  
MoreAir's Avatar
MoreAir
New User
Joined: May 2011
Posts: 2
Likes: 0
antiseize NEVER

DO NOT USE Thread anti seize, you need the ground path of the threads for the sparkplug to get all the power to the fuel.

I just installed new motor in my v10. I made my own plug wires. out of stainless steel wire rope and sparkplug connectors. use the factory boots and there are so much better than the springs. resistance went from .5 ohms to .o3 ohms. Major more voltage getting thru
 
Reply
Old May 28, 2011 | 01:06 AM
  #8  
CuNmUdF250's Avatar
CuNmUdF250
Posting Guru
Joined: Nov 2010
Posts: 2,043
Likes: 4
I got a 99 v10 with 142000 that I bought with 90some thousand on it I don't know if the plugs have ever been changed with all I've read on the plugs breaking during a change kinda scared to mess with it truck runs fine passes emissions with flying colors
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-1

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-2

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-3

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-4

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-5

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-6

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
story-7

Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

 Joe Kucinski
story-8

Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

 Michael S. Palmer
story-9

The Best F-150 Deal of Every Trim Level (XL through Raptor)

 Joe Kucinski
Old May 28, 2011 | 02:18 AM
  #9  
MoreAir's Avatar
MoreAir
New User
Joined: May 2011
Posts: 2
Likes: 0
plugs on v10

They are not that bad. Just spray a little wd40 down there the night or an hour before and be gentle breaking them free.

also at 90k or above it is a good thing to change the o2 sensors , as they are good for 60 to 100k miles. all 3 on your truck.

pm I have a lot of info on the 99. as I have done a lot of weird stuff to mine. I can send you pics of my super plug boots and wires cores.
 
Reply
Old May 28, 2011 | 06:00 AM
  #10  
CPaulsen's Avatar
CPaulsen
Senior User
Joined: Apr 2011
Posts: 447
Likes: 1
From: Southern Oregon
It shouldn't be too bad....I just did my V-10 in under 2 hours.
 
Reply
Old May 28, 2011 | 06:24 AM
  #11  
p-nut's Avatar
p-nut
Senior User
Joined: Jul 2010
Posts: 336
Likes: 1
Originally Posted by MoreAir
DO NOT USE Thread anti seize, you need the ground path of the threads for the sparkplug to get all the power to the fuel.

I just installed new motor in my v10. I made my own plug wires. out of stainless steel wire rope and sparkplug connectors. use the factory boots and there are so much better than the springs. resistance went from .5 ohms to .o3 ohms. Major more voltage getting thru
If you dont use antisieze, corrosion will develop between the dissimilar metals and ruin the threads causing an eventual plug pop. Use copper antisieze and torque to 14 ft.lbs.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
gears351
2007 - 2014 Expedition & Navigator
4
Jul 24, 2013 11:57 AM
racerock
1997 - 2006 Expedition & Navigator
17
Jun 27, 2010 12:59 PM
bryyce62
Modular V8 (4.6L, 5.4L)
1
Apr 23, 2008 06:45 PM
MattsCCF350
Modular V8 (4.6L, 5.4L)
4
Mar 7, 2006 11:43 PM
rlawtrey
1997 - 2003 F150
6
Oct 11, 2001 10:01 PM




All times are GMT -5. The time now is 08:08 PM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE