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new ip and injectors now wont start

Discussion in '6.9L IH & 7.3L IDI Diesels' started by ryder417, Jul 11, 2019.

  1. rhkcommander

    rhkcommander Full Access Member

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    Yup. Good practice to do this with a new IP/injectors anyway
     
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  2. Kizer

    Kizer Supporting Member Supporting Member

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    Each injector LINE. To bleed air from the fuel system:

    Disconnect glow plug relay.

    Then I'd start with the schrader valve, on top of the fuel filter head. Make sure you have a steady stream of fuel (while cranking).

    Do not crank for more than 30 seconds at a time. ALLOW STARTER TO COOL for 2 minutes between cranking sessions.

    Then open each injector line (slightly) until you see fuel (while cranking) ... then re-torque the line immediately

    Charge your batteries.

    Repeat until you see smoke (from tail pipe) while cranking ... re-connect glow plug controller ... hope it fires off
     
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  3. Selahdoor

    Selahdoor Full Access Member

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    You are correct. I was thinking backwards.
     
  4. ryder417

    ryder417 Registered User

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    is there a spec for fuel pressure on lift pump i cant find one or missed it
     
  5. renjaminfrankln

    renjaminfrankln Supporting Member Supporting Member

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    3-6psi should be okay

    It takes a LOT of cranking to purge the air out of a new system with the mechanical lift pump. You need to crack several injectors (loosen a turn or so) and wait until you see fuel coming from them. Then tighten them up and crank some more. Give it a little gas from the pedal while cranking.
     
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  6. Kizer

    Kizer Supporting Member Supporting Member

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  7. typ4

    typ4 Supporting Member Supporting Member

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    Since your parts are from Pensacola it's very likely that you got a bunch of used crap you should read the Hall of Shame before you order from them.
     
  8. ryder417

    ryder417 Registered User

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    update reinstalled old pump and truck fired in about 2 minutes , will never again order from pensacola diesel , where is the hall of shame located ? i cant find it
    thank you to everyone that helped
     
  9. Kizer

    Kizer Supporting Member Supporting Member

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    I'm glad to hear that your rig is running ... sorry that you got screwed.

    Hall of Shame thread is under IDI Tech Article heading ... for some reason.
     
  10. renjaminfrankln

    renjaminfrankln Supporting Member Supporting Member

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    Good thing you didn't lose your core.
     
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  11. Selahdoor

    Selahdoor Full Access Member

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    Good quote from that Kizer guy! :)

    Heeeeey.. Wait a minnit! :confused:

    Good news! Look! Renjamin backed you up! :D
     
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  12. typ4

    typ4 Supporting Member Supporting Member

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    If you want a damn good pump rebuild hit me up.
     
  13. Alwaysreadyrob

    Alwaysreadyrob 1994 7.3 TURBO IDI 4x4

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    same thing happened to me
     
  14. papadiesel

    papadiesel Full Access Member

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    Hate to tell you this but Pensacola injectors are horrible I bought a set they tested all over the board anywhere from 950 to 2300 for a full rebuilt setThey argued I sent them back after I had them pop tested bought rebuilt Standynes from Accurate Diesel and have not had a problem since
     
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  15. CEDRICWARD

    CEDRICWARD Registered User

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    If you have a Schrader valve (like a tire valve) on the fuel filter you can loosen the stem in it (you need a valve tool to do this) and put a cup under it to catch any fuel that comes out while you BRIEFLY crank the engine without waiting for the glow plugs to get hot.
    This will get the air out of the line much easier than loosening the injectors.
     

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