lift pump question - Defender Source
Defender Source  

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


Reply
 
Thread Tools
  #1  
Old December 22nd, 2013, 03:06 PM
Jaded-7
Status: Offline
Harrison
None
Member
 
Join Date: Feb 2013
Location: United States
Posts: 76
lift pump question

Hi all, question on the lift pump. (85 2.5 na) When i try and manually prime the fuel, i can't get the fuel to actually pump up from the tank. Should i leave the banjo bolt attached to the fuel filter cracked open while pumping, or bleed it similar to brakes, and pump, hold, loosen bolt, tighten bolt, repeat?

Maybe the lift pump just went bad, but the car ran right before i bought it, so i'm not quite sure. I was thinking about just dropping a tube from the lift pump into a can of diesel to make sure it's not a line to the tank thats bad.

I believe it was run out of fuel before i received it and thats the problem. I've since added 5 gallons of diesel, but to no avail. Should i add fuel to the fuel filter and try the pump again?

Thanks
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old December 22nd, 2013, 03:20 PM
rdavisinva's Avatar
rdavisinva
Status: Online
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,790
The diaphragm could be bad or you have a suction side air leak.
We always install a 12V fuel pump back by the tank that eliminates the sort of time consuming nonsense you are experiencing trying to move fuel.
With a 12V pump you get in turn on the key and start the vehicle with a self bleeding fuel system.
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #3  
Old December 22nd, 2013, 04:48 PM
mikeslandrover's Avatar
mikeslandrover
Status: Offline
Mike Hammond
110 200Tdi and a 2005 Scorpa SY250
Member
 
Join Date: Oct 2003
Location: Oxted, Surrey, England, U.K
Posts: 1,756
Registry
Could be that the lift pump cam is stopped at the full lift position the manual lever won't do anything in the way of pumping fuel in that situation. Try turning the engine over a bit with a suitable socket on the crank bolt and try the lift pump again.
__________________
Mike Hammond
Diesels.....great when they're going and so easy to work on.
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old December 22nd, 2013, 05:00 PM
Jaded-7
Status: Offline
Harrison
None
Member
 
Join Date: Feb 2013
Location: United States
Posts: 76
yea, i came across a few posts suggesting to put in a 12v electrical pump.

I did make sure the cam was in the correct position. I have a bit of resistance, and can hear something happening, but am not getting any results.

Thanks again.
Reply With Quote
  #5  
Old December 22nd, 2013, 05:58 PM
CMSgt Bo's Avatar
CMSgt Bo
Status: Offline
Bo
1985 One Ten
Member
 
Join Date: Jan 2012
Location: Banner Elk NC
Posts: 784
This may sound like a silly question but do you have more than one fuel tank?

I had the same thing happen after my tank selector valve failed internally.
__________________
Proud member of the YCHJCYA2PDTHFH club.

My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."
Reply With Quote
  #6  
Old December 22nd, 2013, 06:33 PM
don's Avatar
don
Status: Offline
Don Bunnell
'86 110 3dr ST
Member
 
Join Date: Sep 2007
Location: Rumson, NJ
Posts: 4,271
Registry
Quote:
Originally Posted by rdavisinva View Post
The diaphragm could be bad or you have a suction side air leak. We always install a 12V fuel pump back by the tank that eliminates the sort of time consuming nonsense you are experiencing trying to move fuel. With a 12V pump you get in turn on the key and start the vehicle with a self bleeding fuel system.
This. I installed Robert's sedimenter and added a fuel pump and mine started right up after I farted around with it for 2 weeks (including installing a new mechanical fuel pump and fuel filter).
Reply With Quote
  #7  
Old December 22nd, 2013, 07:46 PM
Jaded-7
Status: Offline
Harrison
None
Member
 
Join Date: Feb 2013
Location: United States
Posts: 76
Do you all use these electrical pumps constantly while the car is running (wired to ignition), or just to prime them (on a switch)?
Reply With Quote
  #8  
Old December 22nd, 2013, 08:19 PM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,835
Registry
are you certain you have enough fuel in the tank for the pickup to reach it ?
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #9  
Old December 22nd, 2013, 08:52 PM
Jaded-7
Status: Offline
Harrison
None
Member
 
Join Date: Feb 2013
Location: United States
Posts: 76
I know it's got at least 5 gallons! lol. was thinking about dumping some more in though.
Reply With Quote
  #10  
Old December 22nd, 2013, 09:02 PM
Capt Milks's Avatar
Capt Milks
Status: Offline
Mike
Defender V-8, Defender 2.25
Member
 
Join Date: Oct 2004
Location: United States
Posts: 1,798
Do you have the side tank, D90, or a rear tank D110? It sometimes takes a little bit to get the fuel up from the tank. You could also put a suction on the fuel filter to pull the fuel up. Have you checked the return line to see if it is trying to return the diesel?
Reply With Quote
  #11  
Old December 22nd, 2013, 09:20 PM
rdavisinva's Avatar
rdavisinva
Status: Online
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,790
Quote:
Originally Posted by Jaded-7 View Post
Do you all use these electrical pumps constantly while the car is running (wired to ignition), or just to prime them (on a switch)?
Key on pump runs, key off pump off.
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #12  
Old December 23rd, 2013, 02:04 PM
josh-man's Avatar
josh-man
Status: Offline
joshua
82 Land Rover 110 Ex MOD
Member
 
Join Date: Jun 2004
Location: new england
Posts: 1,635
Registry
This may be obvious. I tired and tried to prime the system after i did a filter change. Same engine. Thought the lift pump went bad. I used that little manual lift pump up and down 500 times. Nothing. BUT finally figured out the manual lift pump only actually pumps in the last 1/4-1/2 inch of movement and you need to squeeze it REALLY hard. If you squeeze it hard, you may feel it squish the diaphram or whateverthehell its actually using to pump. also make sure you bleed your injectors too. Open the small nuts and prime until fuel comes out of all of them. tighten them down and she may just start!
Reply With Quote
  #13  
Old December 23rd, 2013, 04:45 PM
Jaded-7
Status: Offline
Harrison
None
Member
 
Join Date: Feb 2013
Location: United States
Posts: 76
Quote:
Originally Posted by josh-man View Post
This may be obvious. I tired and tried to prime the system after i did a filter change. Same engine. Thought the lift pump went bad. I used that little manual lift pump up and down 500 times. Nothing. BUT finally figured out the manual lift pump only actually pumps in the last 1/4-1/2 inch of movement and you need to squeeze it REALLY hard. If you squeeze it hard, you may feel it squish the diaphram or whateverthehell its actually using to pump. also make sure you bleed your injectors too. Open the small nuts and prime until fuel comes out of all of them. tighten them down and she may just start!
You sir, are the man! LOL... After my thumbs starting hurting, and i was starting to bend the little lever, and yes, after saying, "This sum bitch doesn't know was he's talking about! God Damn it @#$#@@" I noticed a little drip coming from the fuel filter! tightened that up, opened up the other valve, bled that, cranked a bunch of times and bam! It's outside running in this ice storm!

Thanks so much Josh-Man!
Reply With Quote
  #14  
Old December 23rd, 2013, 06:32 PM
josh-man's Avatar
josh-man
Status: Offline
joshua
82 Land Rover 110 Ex MOD
Member
 
Join Date: Jun 2004
Location: new england
Posts: 1,635
Registry
Quote:
Originally Posted by Jaded-7 View Post
You sir, are the man! LOL... After my thumbs starting hurting, and i was starting to bend the little lever, and yes, after saying, "This sum bitch doesn't know was he's talking about! God Damn it @#$#@@" I noticed a little drip coming from the fuel filter! tightened that up, opened up the other valve, bled that, cranked a bunch of times and bam! It's outside running in this ice storm! Thanks so much Josh-Man!
Glad I could help!
Reply With Quote
Reply

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

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
Best way across the US Mike Hippert Defender Technical Discussions 173 April 29th, 2010 04:56 PM
Diagnosing Fuel Pump Issues hutch Defender Technical Discussions 40 May 21st, 2009 09:04 PM
Fuel Pump Fuse Blows all the Time now! thug1313 Defender Technical Discussions 9 March 2nd, 2006 07:55 PM
Lift question beaten to death again...... gonewheeln Defender Technical Discussions 6 July 6th, 2005 06:57 PM
Latest question. Thread size on 3.9 water pump for fan clutch? Hans Misc. Chit-Chat 1 January 29th, 2005 09:03 PM


All times are GMT -5. The time now is 10:17 AM.


Copyright