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Fuel airlock or faulty fuel pump?

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  • Fuel airlock or faulty fuel pump?

    I had a strange thing happen to me on a recent return trip from Ningaloo in my ’05 1KZ GX. I was towing a trailer and had just completed a bumpy section of dirt road from Ningaloo station, when the fuel level dropped to the second tank, the needle showing 7/8 full. Shortly thereafter, the car lost power and died in the middle of nowhere.
    I diagnosed a fuel shortage problem and attempted to prime the diesel line to the injector pump. I could blow freely down the line from the filter to the tank and out of the filler with no bubbling discernable in the tanks. Yet, sucking on the line resulted in a mouthful of diesel! Priming the line with the hand pump built up fuel pressure in the delivery line, allowing me to start the motor and drive about 300m before the engine died again and again.
    I eventually got going again by adding fuel to the vehicle until I was again on the first tank. Curiously, there was a lot of bubbling and gurgling when I poured in the 40l of fuel from a jerry can.
    I suspect two potential causes:
    1. An airlock in the plumbing between the two tanks – hence the gurgling
    2. The pump in the second tank (if it exists) is faulty
    I am nervous to let the fuel level drop to the second tank to test either theory as the wife and kids use the vehicle as a daily drive and I don’t want them stranded again.
    Does anyone have any ideas or suggestions to the cause and solution?
    I have tried to research this in other forums on PP and to get an understanding of the fuel delivery system, but with the migration, it seems that all of the pertinent links that pop up in Google are not available; they all have “viewtopic” in the URL rather than the new “showthread” as Schaffer found here
    HTML Code:
     http://www.pradopoint.com/showthread.php?20386-BUG-reports..../page3
    . Is there any way of viewing these historical posts?
    [COLOR="blue"][SIZE="1"]2005 1KZ GX
    Working on the accessories![/SIZE][/COLOR]

  • #2
    I see the links have been fixed today and I have found this http://www.pradopoint.com/showthread...Problem-diesel
    If there are any other ideas, please let me know.
    Thnaks.
    [COLOR="blue"][SIZE="1"]2005 1KZ GX
    Working on the accessories![/SIZE][/COLOR]

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