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Thread: Weird Airlock Issue-Injector line not purging

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  1. #1
    Join Date
    May 2004
    Location
    Salem, Oregon
    Posts
    123

    Default Weird Airlock Issue-Injector line not purging

    Short Background Story-
    Had really filthy main fuel filter. Changed
    Just changed out the sock in the tank..It was filthy too.
    Cleaned the tank.
    Clean fuel in tank
    Purged the air out of the filter housing.
    Purged the air out of the T-handle

    When I start the engine with foot on throttle, engine will go to 1500-2000 and then fall off.
    Idle is about 600 and engine is not smooth.

    I have cracked (to bleed) 6 of the 8 lines (2 under the turbo are left alone) and cranked several times.

    Engine behaves in pretty much the manner while running, rough and it really wont respond to large throttle inputs. Only a light foot and it will struggle getting up to 12-1500 rpm

    After several rounds of doing this, I started and let it run for a whle.

    Now when I crack open #1 injector line while the engine is running, I am not getting any fuel out of it. I had earlier, the head has fuel on it below the injector.

    Does anyone know how come the injector pump isnt purging the line? Could the pump be more airlocked than normal? Do I have a pump issue? Do I need to pull the top of the pump?

    I havent checked any of the other lines to see if they arent spitting fuel.

    The engine is running like it is missing 1 to 2 cylinders right now.

    Appreciate your help in advance.
    Thanks,
    Last edited by BrentN; 09-08-2012 at 14:36. Reason: Misc clarifications
    BrentN
    1999 Suburban 2500 4x4
    176,500 miles,4.10,K & N Air Filter
    Kennedy 3.5" Exhaust, Remote Mounted FSD Cooler
    Kennedy Boost Fooler, Homemade Intercooler (Dieselpage Model)
    Derale Fan Cooled Tranny Cooler (under body mount)
    A Pillar Pod (Isspro Boost, Pyro & Trans Temp)

    2014 Cruze 2.0 Diesel- Tuned and loving it.
    Kerma TDI Tune (+35hp/75lb-ft).
    55.7 MPG best average thus far

    2008 Grand Cherokee, 3.0L Mercedes Diesel
    Tuned- 240hp/440lbs - Amazing out of a 3.0L

    1998 Dutch Star 38' Diesel Pusher, 8.3 Cummins, Allison 6 spd, 9.9-10 mpg
    Stock 300 hp/850 ft-lbs

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