Weird fuel leak - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old March 14th, 2012, 09:38 AM
tomaco1's Avatar
tomaco1
Status: Online
T.mac
83 110
Member
 
Join Date: Oct 2007
Location: Long Island, New York
Posts: 3,695
Registry
Weird fuel leak

Didn't want to hijack the other fuel tank thread, but i have the same tank, which I thought was leaking, but now I am thinking its leaking somewhere else and running down the to the bottom of the tank.
It is sporadic and seems to leak worst when the engine is under load, like when taking off from a stop.

Any ideas?
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old March 14th, 2012, 10:07 AM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,543
Registry
Tom, do you have the ROW rear fuel tank, NAS rear fuel tank, or the old-style under-seat fuel tank?
Reply With Quote
  #3  
Old March 14th, 2012, 12:16 PM
tomaco1's Avatar
tomaco1
Status: Online
T.mac
83 110
Member
 
Join Date: Oct 2007
Location: Long Island, New York
Posts: 3,695
Registry
Under passenger seat
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old March 14th, 2012, 12:24 PM
airbornrover's Avatar
airbornrover
Status: Offline
William Skidmore
SIII 109 SW
Member
 
Join Date: Oct 2004
Location: Land by parkway and 33
Posts: 1,882
Split fuel line? Fitting not tight enough?
__________________
Quote:
Just to be clear, i was not bragging. i was calling you a pussy. Ren Ching
There is nothing as permanent as a temporary fix. JSBriggs
Reply With Quote
  #5  
Old March 14th, 2012, 12:34 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,543
Registry
The design of the fuel tank is somewhat interesting.

There is a skid, and the skid is welded via spot welds to the tank. The tank skid is what is attached to the frame. You already know this much I'm sure

If you drill out the spot welds and separate the skid from the tank, then you will see that there is some kind of rubber and foam mastic between the fuel tank and the skid. This stuff traps moisture and will cause both the skid and fuel tank to corrode and rust.

There are several ports on the fuel tank. The first is the main fill port, located at the rear of the tank. Above that is the relief port. Both the relief port and the main fill port should be connected via fuel line to the fuel filler neck. The intent of the relief port is double. The first is to allow air to escape the tank while filling. The second is to start flowing fuel into the top of the fuel filler neck in order to signal the user that the tank is full.

The top of the tank has two ports. The first is the port for the fuel pickup/fuel sender assembly. The second is the return line port.

If you have a leak that gets worse when you accelerate, I would first check the connection of the fuel filler line to the main fill port and the connection of the fuel filler line to the relief port. These are to the rear of the truck and therefore would experience leaks as the fuel shifts to the rear of the tank during acceleration.
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Tags
fuel

Thread Tools

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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
fried fuel pump mattdh Defender Technical Discussions 2 July 13th, 2012 02:55 PM
300 Tdi Egt Q?????? Buckon37s Defender Technical Discussions 37 July 11th, 2012 11:26 AM
Fuel Pump Fuse Blows all the Time now! thug1313 Defender Technical Discussions 9 March 2nd, 2006 07:55 PM
Calling all diesel guys - Biodiesel??? cbass Defender Technical Discussions 47 January 31st, 2006 11:18 AM
95 won't start, possible fuel priming issue? jcasteel Defender Technical Discussions 1 March 15th, 2005 09:45 AM


All times are GMT -5. The time now is 12:09 PM.


Copyright