Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V8 (4.6L, 5.4L)
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 04-27-2014, 07:07 PM
allingeneral's Avatar
allingeneral allingeneral is offline
Senior User
 
Join Date: Mar 2010
Posts: 183
allingeneral is gaining momentum as a positive member of FTE.
2001 5.4L moisture in Coil on Plugs causing misfire

2001 Navigator 5.4L - I had to replace one of the coils on the driver's side some time ago, and since then, I keep getting moisture under the coil cover that eventually causes a misfire. If I remove the cover and let things dry out, then the misfire goes away.

I don't drive this truck much. Where is this moisture coming from? Is it getting under the cover from outside, or is something leaking/cracked/broken internally?
__________________
2006 F250 CCSB - 6.0L Diesel / 4x4 (VGOF)
BODY: 2.5" Superlift front Spring Spacers - 5" Readylift rear blocks - Skyjacker Nitro 8000 shocks - 17x10 wheels - 35x12.5x17 Mickey Thompson ATZ tires - Bushwacker Pocket Style Fender Flares - Recon Amber LED Roof Clearance Lights ### ELCTRICAL/MECHANICAL: ScanGauge 2; High Idle Mod; 5w40 Rotella T6 Synthetic; Rotella ELC conversion; Blue Spring; Replaced EGR cooler and oil cooler at 125k;
Reply With Quote
  #2  
Old 04-27-2014, 07:44 PM
jesse5 jesse5 is offline
Senior User
 
Join Date: Nov 2007
Location: Roanoke, VA
Posts: 320
jesse5 is starting off with a positive reputation.
Could be leaking intake, you did not say which cylinder or what color moisture.
Reply With Quote
  #3  
Old 04-27-2014, 07:55 PM
allingeneral's Avatar
allingeneral allingeneral is offline
Senior User
 
Join Date: Mar 2010
Posts: 183
allingeneral is gaining momentum as a positive member of FTE.
Was cylinder #5 this time around. Will drive it for a few days while waiting for F250 6.0L parts and see if/when it happens again and try to see if it's coolant or just water.

Leaking intake? Broken/cracked or a gasket issue?
__________________
2006 F250 CCSB - 6.0L Diesel / 4x4 (VGOF)
BODY: 2.5" Superlift front Spring Spacers - 5" Readylift rear blocks - Skyjacker Nitro 8000 shocks - 17x10 wheels - 35x12.5x17 Mickey Thompson ATZ tires - Bushwacker Pocket Style Fender Flares - Recon Amber LED Roof Clearance Lights ### ELCTRICAL/MECHANICAL: ScanGauge 2; High Idle Mod; 5w40 Rotella T6 Synthetic; Rotella ELC conversion; Blue Spring; Replaced EGR cooler and oil cooler at 125k;
Reply With Quote
  #4  
Old 04-27-2014, 08:37 PM
jesse5 jesse5 is offline
Senior User
 
Join Date: Nov 2007
Location: Roanoke, VA
Posts: 320
jesse5 is starting off with a positive reputation.
OK, it is up front so it should not be water leaking down from the windshield wiper cowl.

Check color and greasiness.

Could be either reason you mentioned about intake or a porous head casting.

Don't let it take out the coil drivers in the ECU. Factory manifold replacements only if cracked.
Reply With Quote
  #5  
Old 04-27-2014, 09:33 PM
allingeneral's Avatar
allingeneral allingeneral is offline
Senior User
 
Join Date: Mar 2010
Posts: 183
allingeneral is gaining momentum as a positive member of FTE.
Thanks for the tips, jesse! reps sent.
__________________
2006 F250 CCSB - 6.0L Diesel / 4x4 (VGOF)
BODY: 2.5" Superlift front Spring Spacers - 5" Readylift rear blocks - Skyjacker Nitro 8000 shocks - 17x10 wheels - 35x12.5x17 Mickey Thompson ATZ tires - Bushwacker Pocket Style Fender Flares - Recon Amber LED Roof Clearance Lights ### ELCTRICAL/MECHANICAL: ScanGauge 2; High Idle Mod; 5w40 Rotella T6 Synthetic; Rotella ELC conversion; Blue Spring; Replaced EGR cooler and oil cooler at 125k;
Reply With Quote
  #6  
Old 04-28-2014, 02:47 PM
je5 je5 is offline
Senior User
 
Join Date: May 2006
Posts: 237
je5 is starting off with a positive reputation.
You probably do not wash the engine or drive through enough water for the fan to spray it onto the engine do you?

If you had previous trouble around number 3 or 4 cylinders the coolant pipe or hose for the heater sometimes leaks.
Reply With Quote
Old 04-28-2014, 02:47 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Misfire F-350 Went724 Super Duty & Heavy Duty 1 09-10-2014 06:53 AM
Rust on Outside of Ignition Coil/Misfire SMKing620 1997 - 2003 F150 1 04-09-2013 11:08 PM
99 Navi Missing kwaskow Expedition & Navigator 3 03-18-2012 01:33 PM
2001 5.4l cracked valve cover??? ArayT 1997 - 2003 F150 8 05-15-2011 08:46 PM
Moisture on COPs Glock 1997 - 2003 F150 1 02-14-2006 10:40 AM


Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V8 (4.6L, 5.4L)

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 01:25 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