Go Back   F150online Forums > Powertrain & Mechanical > V8 Engines
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
  #1  
Old 05-24-2011, 09:58 PM
Member
 
Join Date: May 2011
Location: Texas
Vehicle: 2000 Ford F150
Posts: 33
Spark plug heli-coil failure

Several months ago I had a spark plug blow out of my #8 cylinder. Everything worked fine until about a week ago. Now it appears to be bypassing compression. Not a lot, but just enough to cause a miss. While trying to remove the plug to do a compression check the plug was turning out very easy for a while... then it became very hard to turn. I screwed the plug back in without completely removing it to give me a little time to think about this. I have an idea that the heli-coil itself might be trying to come out with the plug. When I screwed it back in it seems like it is going in deeper than it is designed to. The spark plug socket seems to no longer be able to turn the head on the spark plug. I don't think I will have much trouble getting the spark plug out at this point, but what would you guys suggest I do to repair this short of replacing the head?
Thanks for your suggestions!
Reply With Quote
  #2  
Old 05-24-2011, 10:41 PM
Senior Member
 
Join Date: Jul 2007
Location: Beaverton Or.
Vehicle: 07 Ford F150
Posts: 3,225
Heli coils are junk in these heads. Timesert is the way to go. If your lucky and can remove the heli coil with enough material left to get a timesert installed. Many many people on here run them with no issues. But there are known issues with heli coils.
Reply With Quote
  #3  
Old 05-24-2011, 11:22 PM
Member
 
Join Date: May 2011
Location: Texas
Vehicle: 2000 Ford F150
Posts: 33
Quote:
Originally Posted by Toyz View Post
Heli coils are junk in these heads. Timesert is the way to go. If your lucky and can remove the heli coil with enough material left to get a timesert installed. Many many people on here run them with no issues. But there are known issues with heli coils.
Wow. Where can I get a "timesert"?
Thank you!
Reply With Quote
  #4  
Old 05-24-2011, 11:56 PM
Senior Member
 
Join Date: Jun 2007
Location: Utah
Vehicle: 1999 Ford F-150 5.4
Posts: 5,202
user Galaxy rents the tools and supply's the stuff as part of the rental.
__________________

1999 F-150 xlt 5.4 4x4
1971 Mach 351c 5 speed TKO600 Tremac-sold!
Reply With Quote
  #5  
Old 05-25-2011, 01:06 AM
Technical Article Contributor
 
Join Date: Oct 2005
Location: MI
Vehicle: 1998 Ford F150 5.4L 4X4
Posts: 25,636
If you have to you can go with a "Big Sert" as well.
Reply With Quote
  #6  
Old 05-25-2011, 01:11 PM
Senior Member
 
Join Date: May 2004
Location: Longmont, CO
Vehicle: 1999 Ford F150
Posts: 577
I recently had a plug shoot out of my re-manufactured 99 5.4 drivers side head, I was sort of stranded so I used J.B. Weld and that surprisingly worked for about 500 miles (2 months). It even passed state emissions, but as I left the testing facility the J.B. Weld gave up and shot the plug again. I knew I'd have to wait for the plug to launch again (getting the J.B. out would have been very hard). I had timeserts installed in my original heads but one got loose on me and shot out which is why I replaced the heads. This time, I used the 'lock-n-stitch' method where the insert is threaded and lock-tite to the head, and a cross pin is drilled into the threads keeping them 'locked' into the head. Its a ford approved procedure so hopefully the next owner has good luck with the repair. I have a growing family and the Scab is too small, looking at 04 Navigators
Reply With Quote
  #7  
Old 05-25-2011, 06:52 PM
Member
 
Join Date: May 2011
Location: Texas
Vehicle: 2000 Ford F150
Posts: 33
Quote:
Originally Posted by jethat View Post
user Galaxy rents the tools and supply's the stuff as part of the rental.
Thank you jethat! I have sent Galaxy a message and I sure hope this works out!
Reply With Quote
  #8  
Old 05-25-2011, 07:03 PM
Member
 
Join Date: May 2011
Location: Texas
Vehicle: 2000 Ford F150
Posts: 33
Quote:
Originally Posted by jbrew View Post
If you have to you can go with a "Big Sert" as well.
I don't know if I will need to do that or not. I removed the plug and the cheap insert came out with it...good thing! It came out hard but I took my time removing it by backing off on it repeatedly as it was bindin up. After reading how the timesert works by cold rolling the threads at the bottom of the installed insert...the regular size might work out ok.
What do you think??
Thanks for your help!
Reply With Quote
  #9  
Old 05-25-2011, 07:14 PM
Senior Member
 
Join Date: Jun 2002
Vehicle: 2002 Ford F-150 5.4L
Posts: 4,197
Chuck...please e-mail me at amsoil@galaxylubricants.com You needing a BigSert is dependant on how much material was removed when the heli-coil was installed, but we can go over that. Odds are you're in good shape.

Mikey...don't quite now what happened with your TimeSert coming loose. The "lock-n-stitch" method you described actually describes a TimeSert...TimeSerts should have locktite on the threads and also have a pin that's rolled into the head via a tool that comes with the kit. Sounds to me like your TimeSert failed because it wasn't installed properly. Not too many reports of TimeSerts failing or backing out, that's for sure.
__________________
'02 F150 XLT 4X4 SCrew. 5.4L

K&N FIPK/Amsoil Filter
Flowmaster 40 si/do Exhaust
305/70 16 GY MTR Kevlar
16X10 MB Motorsport wheels
4.10 Gears
Rancho 4" lift
Rancho 9000XL Pro Series Resi Shocks
FireStone Air Bags
Autometer Carbon Fiber Oil/Trans Temp Gauges
Carbon Fiber Interior (www.dash-kit.com)
Peterson Fluid Sys. Remote Oil Filter
FTVB
Troyer Performance Electric Fans
Underdrive Pulleys
Amsoil Fluids Throughout
Reply With Quote
  #10  
Old 05-26-2011, 01:10 PM
Member
 
Join Date: May 2011
Location: Texas
Vehicle: 2000 Ford F150
Posts: 33
Rental Agreement

Mr. Galaxy,
I filled out your rental agreement and sent you the required deposit. Sorry, I am most likely wearing you out with notifications, but I want to make sure you don't miss my information as I need my truck back on the road!
Thanks again,
Chuck
Reply With Quote
  #11  
Old 05-26-2011, 01:20 PM
Senior Member
 
Join Date: May 2004
Location: Longmont, CO
Vehicle: 1999 Ford F150
Posts: 577
@Galaxy, I was thinking the 'non pin' was a TimeSert. When I first blew a plug with my old heads, I had a insert that looked sort of like a heli-coil, but had 'teeth' around the top to lock the insert in. I was told back then that was a TimeSert so that is why I thought Lock-N-Stitch was something entirely different. This time, I know for certain I have the cross pin type of insert. If I Didn't have TimeSert back then, what is it I had?
Reply With Quote
  #12  
Old 05-26-2011, 01:25 PM
Member
 
Join Date: May 2011
Location: Texas
Vehicle: 2000 Ford F150
Posts: 33
Quote:
Originally Posted by mikeyss View Post
@Galaxy, I was thinking the 'non pin' was a TimeSert. When I first blew a plug with my old heads, I had a insert that looked sort of like a heli-coil, but had 'teeth' around the top to lock the insert in. I was told back then that was a TimeSert so that is why I thought Lock-N-Stitch was something entirely different. This time, I know for certain I have the cross pin type of insert. If I Didn't have TimeSert back then, what is it I had?
That is the type of insert I had as well!
Reply With Quote
  #13  
Old 10-30-2011, 10:47 PM
Member
 
Join Date: Apr 2011
Posts: 38
Quote:
Originally Posted by chuck gibson View Post
I don't know if I will need to do that or not. I removed the plug and the cheap insert came out with it...good thing! It came out hard but I took my time removing it by backing off on it repeatedly as it was bindin up. After reading how the timesert works by cold rolling the threads at the bottom of the installed insert...the regular size might work out ok.
What do you think??
Thanks for your help!
Chuck,
I know this is an old thread, but I have almost the identical problem you had with an old insert coming out. How did this work out? Did you use the regular Timesert or did you have to use the Bigsert? How did you decide? Thanks.
Reply With Quote
Old 10-30-2011, 10:47 PM


 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 08:36 PM.





This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company
 
Contact Us Advertising Privacy Statement Terms of Service Jobs Forum Text Archives
Emails & Contact Details