Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150
Sign in using an external account
Register Forgot Password?


1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage SPONSORED BY:

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 03-10-2012, 01:41 PM
HULKTANK HULKTANK is offline
New User
 
Join Date: Mar 2012
Posts: 1
HULKTANK is starting off with a positive reputation.
How to replace your 4.6L spark plugs

Periodically, my 2003 150 superscrew with 4.6L starts miss firing, the check engine light obviously comes on when this happens. Took it to the Ford Dealership and Big-O-Tire and they both told me that it it #1 spark plug that misfires. Big-o-tire has taken the #1 plug out a couple of times to drain water that comes on there and take the plug out to clean. This seems to happen when it rains and water gets on there. My truck has just over plus 100,000 miles and I had already had the tuneup. All the plugs were brand new. The #1 plug that periodically gets water around becomes rusted. Any suggestions on the water issue or overall.Thx
Reply With Quote
  #2  
Old 03-10-2012, 08:56 PM
kidzstang kidzstang is offline
Senior User
 
Join Date: Mar 2004
Location: York, PA
Posts: 140
kidzstang is starting off with a positive reputation.
Weird that number 1 plug would get rain on it. Are your sure that it isn't a slight coolant leak either from the Tstat or intake area?


Quote:
Originally Posted by HULKTANK View Post
Periodically, my 2003 150 superscrew with 4.6L starts miss firing, the check engine light obviously comes on when this happens. Took it to the Ford Dealership and Big-O-Tire and they both told me that it it #1 spark plug that misfires. Big-o-tire has taken the #1 plug out a couple of times to drain water that comes on there and take the plug out to clean. This seems to happen when it rains and water gets on there. My truck has just over plus 100,000 miles and I had already had the tuneup. All the plugs were brand new. The #1 plug that periodically gets water around becomes rusted. Any suggestions on the water issue or overall.Thx
__________________
Jack
Reply With Quote
  #3  
Old 03-11-2012, 01:05 AM
Lime1GT Lime1GT is offline
Elder User
 
Join Date: Jul 2010
Posts: 517
Lime1GT is starting off with a positive reputation.
Have you ever changed the COP plug boot? They can take set from heat and not seal properly when reinstalled after a plug change. That will allow road splash into the plug well and may start a misfire condition. Install a new boot and spread just a little dielectric grease inside the boot that slides over the spark plug. Don't fill the boot with grease, you don't want dielectric grease on the spark plug's terminal to COP's coil spring contact.
Reply With Quote
Old 03-11-2012, 01:05 AM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Draining water from the primary fuel filter (HFCM) bismic 6.0L Power Stroke Diesel 43 08-14-2012 08:11 PM
98F150: CEL & water in spark plug tunnel cstrack 1997 - 2003 F150 3 05-16-2011 04:41 PM
Worried about changing 10 yr old plugs - 5.4L F150 PEG 1997 - 2003 F150 7 02-21-2011 07:02 PM
engine missing during accelration Schuby 1997 - 2003 F150 8 03-03-2010 11:42 AM
4.6L and Spark Plug Replacement johntucker09 2004 - 2008 F150 8 02-08-2007 03:37 PM


Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150

Tags
1997, 46, 46l, 54l, change, expedition, f150, ford, fuel, injected, liter, plug, plugs, replace, spark

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 08:13 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
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. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup