Fuel delivery questions

Discussion in 'Diesel Tech' started by OldGu, Jul 11, 2019.


  1. OldGu

    OldGu Farmall Cub

    Joined:
    Jun 13, 2019
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    1
    I bought a 74 Scout that was converted from a 258 to a Nissan diesel, nonturbo. Unable to speak with the previous owner who did the conversion. His family stored it in a Minnesota shed since 2002, never drove it. So the brakes are all renewed, ready to begin check list to start it. Question..there is a fuel line from tank to 7" screw on filter. From 7" filter to manual primer pump, to smaller canister, then to injector pump. Does that sound correct? Next question, since the fuel is from 2002, or earlier, what's the best way to clean out tank? Gauge shows half full. Any other info will be helpful. This is my first diesel. Thanks.
     

    Attached Files:

  2. blue smoke

    blue smoke High Wheeler

    Joined:
    Sep 28, 2008
    Messages:
    1,256
    Likes Received:
    54
    Trophy Points:
    48
    Location:
    Melissa Texas
    Diesel can get nasty when in storage for that long. Being in Minnesota it does get cold.if the fuel was not treated to winter use then what little lubrication it had could have gelled.
    The only sure way to clean the tank is to remove it and have it cleaned by a radiator shop. It may cost a few bucks but in the end it will save you money it filters and aggravation.
     
  3. Joe S

    Joe S Farmall Cub

    Joined:
    Oct 27, 2011
    Messages:
    194
    Likes Received:
    13
    Trophy Points:
    18
    Location:
    Sunland, Lompoc, CA
    Your photo shows the lift pump with the primer mounted to it on the right.

    If the hose on the left goes to the engine mounted filter and the hose on the bottom comes from the remote canister you've got it right.

    I agree on not using the at least 12 year old fuel. Can you get to the sender from above to remove it for a look inside? Even in '07 fuel was pretty good and the tank might not be too bad since it previously had gas.

    You're changing the filters right? I'd fill the filters with something like this https://www.idparts.com/liqui-moly-diesel-purge-500ml-p-448.html and at least pump it through the IP by opening the bleeders. Maybe even run it off a bottle of the stuff with the return line going back to the bottle.
     
  4. OldGu

    OldGu Farmall Cub

    Joined:
    Jun 13, 2019
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    1
    So I changed both filters and have a 5 gallon can with fresh fuel. Using the primer pump, I get fuel out of the hose going to the IP. To bleed the IP, do I turn the engine over with the starter and crack one line at a time that is on top of the injector? Thanks for the help.
     

Share This Page