Notices
6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

Fuel filter leak help

Thread Tools
 
Search this Thread
 
Old Sep 28, 2009 | 07:33 AM
  #1  
chi6488's Avatar
chi6488
Thread Starter
|
Senior User
Joined: Aug 2006
Posts: 291
Likes: 0
Fuel filter leak help

I changed the fuel filters yesterday. I think the rail filter is leaking b/c I noticed a small wet spot under the truck. I looked underneath and could see fuel trail on the rail.

I had the torque wrench set at 20 from the engine mounted and did not reset to 18 for the rail. Could I have damaged the O ring by tightening too tight?? I can't say I have a lot of faith in the torque wrench either b/c I bought it at harbor freight.
 
Reply
Old Sep 28, 2009 | 08:25 AM
  #2  
sdetweil's Avatar
sdetweil
Hotshot
25 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
Club FTE Silver Member

Originally Posted by chi6488
I changed the fuel filters yesterday. I think the rail filter is leaking b/c I noticed a small wet spot under the truck. I looked underneath and could see fuel trail on the rail.

I had the torque wrench set at 20 from the engine mounted and did not reset to 18 for the rail. Could I have damaged the O ring by tightening too tight?? I can't say I have a lot of faith in the torque wrench either b/c I bought it at harbor freight.
shouldn't have been able to hurt the o ring, if you got it fuel wet before putting it on the cap..(make it slippery).. almost sounds like you didn't get the cap on all the way..

I just did mine the other day..

Sam
 
Reply
Old Sep 28, 2009 | 08:35 AM
  #3  
69cj's Avatar
69cj
Hotshot
20 Year Member
Photogenic
Joined: Jul 2005
Posts: 13,834
Likes: 26
From: Middle Tn.
Don't use diesel on the O ring, it can make it swell and bind. Use motor oil, grease or vaseline. Cap should bottom out prior to torque wrench clicking.
 
Reply
Old Sep 28, 2009 | 08:43 AM
  #4  
chi6488's Avatar
chi6488
Thread Starter
|
Senior User
Joined: Aug 2006
Posts: 291
Likes: 0
Unfortunatly I used the diesel fuel being lazy and motorcraft said ok to use either. I will try to wife dry and then tighten some more when I get home.
 
Reply
Old Sep 28, 2009 | 08:43 AM
  #5  
sdetweil's Avatar
sdetweil
Hotshot
25 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
Club FTE Silver Member

Originally Posted by 69cj
Don't use diesel on the O ring, it can make it swell and bind. Use motor oil, grease or vaseline. Cap should bottom out prior to torque wrench clicking.
instructions with the new MC filter said diesel was ok.
never had a rubber oring fail from diesel as a lube.

Sam
 
Reply
Old Sep 28, 2009 | 01:13 PM
  #6  
senix's Avatar
senix
Super Moderator
15 Year Member
Liked
Loved
Top Answer: 1
Joined: Aug 2008
Posts: 37,384
Likes: 1,868
From: Frederick, MD
Club FTE Gold Member
I would take it back off the look that o-ring over. Put oil on it before re-install.
Be sure to wipe all fuel off the bottom side before you power-up.

May have a pinched o-ring
 
Reply
Old Sep 28, 2009 | 03:02 PM
  #7  
69cj's Avatar
69cj
Hotshot
20 Year Member
Photogenic
Joined: Jul 2005
Posts: 13,834
Likes: 26
From: Middle Tn.
Originally Posted by sdetweil
instructions with the new MC filter said diesel was ok.
never had a rubber oring fail from diesel as a lube.

Sam
Ford also said cooling system needed no maint. till 105,000 miles or 5 years. Now they are backtracking. I remember when the doc said this won't hurt at all. He was right, it didn't hurt him. Your truck do as you want. My suggestion was from experience not directions in a box.
 
Reply
Old Sep 28, 2009 | 04:09 PM
  #8  
chi6488's Avatar
chi6488
Thread Starter
|
Senior User
Joined: Aug 2006
Posts: 291
Likes: 0
Checked underneath and no fresh fuel. I might have jumped the gun and worried about nothing. The fuel was probably remnants from when the filter came off and spilled.

Maybe next time I will try to wipe off spilled fuel so that way I know if it is leaking fuel or not. Well worth the hassle though. Dealer wanted $125 and it cost me $50 for filters and $8 for socket. Satisfaction is priceless.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-1

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-2

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-3

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-4

Every 2026 Ford Engine Explained

 Brett Foote
story-5

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-6

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-7

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-8

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-9

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
Old Sep 28, 2009 | 04:15 PM
  #9  
sdetweil's Avatar
sdetweil
Hotshot
25 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
Club FTE Silver Member

I had my truck front end on the ramp up to my shop, so I could wiggle under it (4x2 so not lifted).. course the fuel ran ALL the way down the chassis...before I put the rag up there..

had the socket from some other fun time, first filter pack cost me 32 delivered.

Sam
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
flynbya2
1999 - 2003 7.3L Power Stroke Diesel
10
Apr 28, 2024 10:12 AM
Olds69442
6.7L Power Stroke Diesel
20
Jan 1, 2013 06:14 AM
mozzles
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
19
Oct 17, 2012 11:30 PM
jasonch
1999 - 2003 7.3L Power Stroke Diesel
16
Mar 19, 2009 12:14 PM
Dustin_86
Fuel Injection, Carburetion & Fuel System
3
Dec 8, 2004 10:33 PM




All times are GMT -5. The time now is 02:45 AM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE