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Thread: Fuel Bleed

  1. #1
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    Fuel Bleed

    I'd like to clean out the fuel sedimenter and change the fuel filter tomorrow.
    I'm a little confused as the the fuel bleed procedure.

    I found this thread which is pretty much what I though was the procedure, until I read something about a "full system bleed" needing to be done if you pull the sedimenter.

    Could anyone help out a noobie and tell me what I need to do?

    Thank you

  2. #2
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    I used to bleed be loosening the top of the front injector. Then pump the lift pump. Now I just pump the lift pump, and take it for an Italian tune.

    I don't think it's text book, but works ok.
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  3. #3
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    If you change just the sedimentor, fill the sedimenter up when you put it back on, then you won't have to bleed it.

    Don't forget the gauze filter for the pump, pretty much in the front drivers side engine mount.
    Last edited by BadCo.; 15th March 2015 at 06:12 AM. Reason: Clarifying

  4. #4
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    Badco
    If you are not changing the fuel filter at the same time you will be able to start the engine once you have put the sediment we back together
    With luck it will bleed itself, if not open the outlet on top of the fuel filter housing and push down the fuel primer pump on the injector pump until you get diesel flowing out. Close that outlet and then pump diesel through to the bleed screw on the injector pump until you get diesel there as well.
    Once you have done that crank it until it starts
    DO NOT use any start fluids
    Regards
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    Phil B

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  5. #5
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    Badco
    Sorry
    I meant to address this to Chris
    Phil B

    Custodian of:
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    1978 S3 swb canvas
    48 749 '88 4x4 Perentie
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  6. #6
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    Quote Originally Posted by Phil B View Post
    Badco
    Sorry
    I meant to address this to Chris
    No worries, thought you did. You can always edit posts:P

  7. #7
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    Theres as many bleed methods as there are people who own isuzus

    the short version of the by the book method.

    theres 2 bleed points one on the fuel filter and one on the IP.
    crack them both and pump the hand prime pump.
    when the fuel comes out the filter, close that one
    when fuel comes out the IP close that one
    crack the injector unions
    hold the accelerator flat to the floor floor
    crank it till the injectors spill fuel
    close the injector unions
    hold the acelerator flat to the floor and crank it till it starts.


    my shortcut method is to pump the hand pump till the resistance increases, pump it another 100 times, then do the step on the loud pedal and crank it till it starts routine
    Dave

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  8. #8
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    Quote Originally Posted by Blknight.aus View Post
    Theres as many bleed methods as there are people who own isuzus

    the short version of the by the book method.

    theres 2 bleed points one on the fuel filter and one on the IP.
    crack them both and pump the hand prime pump.
    when the fuel comes out the filter, close that one
    when fuel comes out the IP close that one
    crack the injector unions
    hold the accelerator flat to the floor floor
    crank it till the injectors spill fuel
    close the injector unions
    hold the acelerator flat to the floor and crank it till it starts.


    my shortcut method is to pump the hand pump till the resistance increases, pump it another 100 times, then do the step on the loud pedal and crank it till it starts routine

    Thanks, but what is an/the IP?
    <edit> nevermind , I assume that is the injection pump.

  9. #9
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    wow. I'd be feeling a bit nervous cracking the injector lines.

    Interestingly, according to the [ame="http://afmsafety.com.au/wp-content/uploads/2015/02/VEH_G103_Land_Rover_110_4X4_all_types_Light_Grade_ Repair.pdf"]manual [/ame](EMEI G103)
    on page 53 it details the bleeding the fuel system and does not mention
    anything about cracking the injector lines.


    edit to add: completed fuel filter change, followed the directions as per manual (not cracking injector lines) and it started and ran fine. Is there any way to do this process without making a complete mess? I had a little tray under the fuel filter and the manual hand pump, and still got diesel damn near eveywhere.

    also whoever designed that oil filter backet needs some discipline. why mount the fuel filter housing the correct(non messy way) and then make you make a complete mess of your engine bay whenever you change the filter !!!
    Last edited by Chris078; 15th March 2015 at 06:34 PM. Reason: more info

  10. #10
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    There is no big deal or danger in cracking the injector lines. Sometimes it is necessary as air is pretty hard stuff to push through an injector.
    When changing the fuel filter, I fill the filter with clean fuel before screwing it on, saves a heap of time and messing about.
    One easy way of priming the water trap and fuel filter is to fit the inlet line with one of those priming bulbs you see on boat fuel tanks. Works a treat, causes no problems and can be left in place permanently. Pushing fuel is much easier than sucking.
    If you are just checking for water, leave the engine running and open the drain cock for a few seconds and it won't suck in air.
    Pete

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