New method to extract porcelain from broken spark plugs - F150online Forums



Articles & How-To's *NOW WITH VIDEO SECTION!*

New method to extract porcelain from broken spark plugs

Reply
 
 
  #1  
Old 11-10-2008, 11:13 AM
Technical Article Contributor
Thread Starter
 
Join Date: Jan 2006
Location: NoVA
Posts: 99
New method to extract porcelain from broken spark plugs

Changed my plugs this week, three broke and two left the porcelain in the head. To get them out I used a method that I haven't seen described anywhere that worked really well.

I used a #2-56 screw glued into a 2" #4-40 standoff as the "pin" to glue into the porcelain. For the "extractor," I drilled and tapped a #4-40 hole in the end of a 3/8" threaded rod and put a #4-40 screw in it. Essentially it was a threaded rod with a smaller threaded rod sticking out of one end. The extractor then screws into the end of the standoff part of the "pin." You use the same method to extract the porcelain as you would the ground shield with a threaded rod (described in this thread). The pins are sacrificial, but the extractor can be used over and over. It worked like a champ. Also, you can use the other end of the rod to extract the ground shield.

And if there's any interest, I could build more and sell them for a small fee.


Here are two of the "pins." The top one has porcelain attached. The bottom is unused.


Here is the "extractor." The right side is the tip, with #4-40 screw.


Here's an up close picture of the extractor tip.


Finally, here's an unused pin threaded to the extractor.

Last edited by vtron; 11-10-2008 at 06:57 PM.
Reply With Quote
  #2  
Old 11-10-2008, 11:16 AM
Senior Member
 
Join Date: Oct 2008
Posts: 475
seeing what a pain in the butt it is to change plugs out I wonder if it would be worth it to have a mechanic do it.. and do you really think a mechanic would change all of them out ?? I am to scared to touch mine, (5.4 v8) heck I cant even see them..
Reply With Quote
  #3  
Old 11-10-2008, 11:48 AM
Member
 
Join Date: Jun 2008
Location: Ontario
Posts: 98
Could you please post some pics of your tool, sounds very interesting. how hard was it to pull out the porcelain using your tool?
Reply With Quote
  #4  
Old 11-10-2008, 12:12 PM
Technical Article Contributor
Thread Starter
 
Join Date: Jan 2006
Location: NoVA
Posts: 99
It was really easy once the glue set up. I made the mistake the first time of not letting the Motorcraft carb cleaner dry before gluing the pin. The glue never set and it pulled right out of the porcelain. Once the cleaner dried and the glue cured, a few turns of the nut and the porcelain pulled right out. Hardest part was putting the pin in the hole and trying not to touch the sides.

I'll post picks tonight when I get home.

By the way, I used Locktite 444.
Reply With Quote
  #5  
Old 11-10-2008, 07:02 PM
Technical Article Contributor
Thread Starter
 
Join Date: Jan 2006
Location: NoVA
Posts: 99
Now with pictures.
Reply With Quote
  #6  
Old 11-10-2008, 07:05 PM
Bluejay's Avatar
Global Moderator &
Senior Member
 
Join Date: Mar 2005
Location: Burleson/Athens/Brownsboro, TX
Posts: 24,776
Quote:
Originally Posted by FX4_2003 View Post
seeing what a pain in the butt it is to change plugs out I wonder if it would be worth it to have a mechanic do it.. and do you really think a mechanic would change all of them out ?? I am to scared to touch mine, (5.4 v8) heck I cant even see them..
What year is your truck?
Reply With Quote
  #7  
Old 11-10-2008, 08:07 PM
RUSS04's Avatar
Senior Member
 
Join Date: Apr 2005
Location: BURBANK ILL
Posts: 579
QUOTE=bluejay432000;3448199]What year is your truck?[/QUOTE]I read the wrong post

Last edited by RUSS04; 11-10-2008 at 08:42 PM.
Reply With Quote
  #8  
Old 11-10-2008, 08:13 PM
RUSS04's Avatar
Senior Member
 
Join Date: Apr 2005
Location: BURBANK ILL
Posts: 579
Quote:
Originally Posted by vtron View Post
Changed my plugs this week, three broke and two left the porcelain in the head. To get them out I used a method that I haven't seen described anywhere that worked really well.

I used a #2-56 screw glued into a 2" #4-40 standoff as the "pin" to glue into the porcelain. For the "extractor," I drilled and tapped a #4-40 hole in the end of a 3/8" threaded rod and put a #4-40 screw in it. Essentially it was a threaded rod with a smaller threaded rod sticking out of one end. The extractor then screws into the end of the standoff part of the "pin." You use the same method to extract the porcelain as you would the ground shield with a threaded rod (described in this thread). The pins are sacrificial, but the extractor can be used over and over. It worked like a champ. Also, you can use the other end of the rod to extract the ground shield.

And if there's any interest, I could build more and sell them for a small fee.


Here are two of the "pins." The top one has porcelain attached. The bottom is unused.


Here is the "extractor." The right side is the tip, with #4-40 screw.


Here's an up close picture of the extractor tip.


Finally, here's an unused pin threaded to the extractor.
Good infoHow many miles on the motor when you changed them ?
Reply With Quote
  #9  
Old 11-10-2008, 08:15 PM
Senior Member
 
Join Date: Jul 2007
Location: Tn
Posts: 970
Do late model 06 have the same plugs too?
Reply With Quote
  #10  
Old 11-10-2008, 08:31 PM
RUSS04's Avatar
Senior Member
 
Join Date: Apr 2005
Location: BURBANK ILL
Posts: 579
Quote:
Originally Posted by 06 SANDSTONE View Post
Do late model 06 have the same plugs too?
Yes they do have the same plugs
Reply With Quote
  #11  
Old 11-10-2008, 08:36 PM
Senior Member
 
Join Date: Apr 2007
Location: Auburn, AL
Posts: 766
Nice work
Reply With Quote
  #12  
Old 11-10-2008, 08:48 PM
RUSS04's Avatar
Senior Member
 
Join Date: Apr 2005
Location: BURBANK ILL
Posts: 579
Quote:
Originally Posted by FX4_2003 View Post
seeing what a pain in the butt it is to change plugs out I wonder if it would be worth it to have a mechanic do it.. and do you really think a mechanic would change all of them out ?? I am to scared to touch mine, (5.4 v8) heck I cant even see them..
If you have a 2003 You do not have the plug problem
Reply With Quote
  #13  
Old 11-10-2008, 09:31 PM
Technical Article Contributor
Thread Starter
 
Join Date: Jan 2006
Location: NoVA
Posts: 99
Quote:
Originally Posted by RUSS04 View Post
Good infoHow many miles on the motor when you changed them ?
I had about 45,000 miles. First 3 plugs broke, two with the porcelain inside. The last 5 came out clean.
Reply With Quote
  #14  
Old 11-10-2008, 10:25 PM
RUSS04's Avatar
Senior Member
 
Join Date: Apr 2005
Location: BURBANK ILL
Posts: 579
Quote:
Originally Posted by vtron View Post
I had about 45,000 miles. First 3 plugs broke, two with the porcelain inside. The last 5 came out clean.
Iam happy you got them out on your own Its sad that you had to go through all of that just to change plugs Ford knows that there is an issue with the plugs But they dont care
Reply With Quote
  #15  
Old 11-12-2008, 02:38 PM
Rockpick's Avatar
F150online
Administrator
 
Join Date: Jan 2002
Location: The Bluegrass State
Posts: 31,434
Great information, vtron!!!
Reply With Quote
 
 
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Trucknoob
2004 - 2008 F-150
12
11-03-2015 01:12 PM
jhayes0202
2004 - 2008 F-150
0
08-15-2015 11:11 PM
A-Town
V8 Engines
5
07-26-2015 10:13 AM
A-Town
Introduction Forum
4
07-21-2015 04:05 PM
F 1Fiddy
2009 - 2014 F-150
7
07-16-2015 04:43 PM


Thread Tools
Search this Thread

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -4. The time now is 04:14 PM.