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Thread: Bleeding fuel system

  1. 12th April 2008, 10:44 AM #1
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    rar110
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    Bleeding fuel system

    I have just started doing my own servicing.

    I replaced the spin on fuel filter (gen isuzu filter) and ryco inline filter before the lift pump.

    I bled the fuel system from the injector pump, the top of the fuel filter housing and the injectors. Fuel flowed from all points other than the injectors.

    However, the motor is not running as smooth as it did before the service.

    have I stuffed up somewhere?
    L322 tdv8 poverty pack - wow
    Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
    Perentie 110 wagon ARN 48-699 another project
    Track Trailer ARN 200-117
    REMLR # 137
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  2. 12th April 2008, 05:02 PM #2
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    rijidij
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    When I've bled my fuel system my engine has run rough for a short time, but only for a minute at the most, then it comes right again.
    '88 County Isuzu 4Bd1 Turbo Intercooled, '96 Defender 130 CC VNT
    '85 Isuzu 120 Trayback, '72 SIIA SWB Diesel Soft Top
    '56 SI Ute Cab

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  3. 12th April 2008, 06:15 PM #3
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    If you leave the bleed nut loose on the injector pump and the final fuel filter (the one in the engine bay on the engine) while you get your first start then close the filter and the injector bleeders it will bleed out the filter and housing a lot quicker. I tend to start them ,warm them up before I change the fuel filter and then crank it till it fires, hold it flat till it struggles without assistance from the starter motor then when the RPM's start to rise like its going to try and spit a piston (it wont the govenor will limit it below its rated max over run RPMS) then ease up on the noisey pedal till the RPMS are at about mid range. hold it there for about a minute and its bled, one short drive later and your ready to pull the rocker cover and check the vavle lash.
    Dave

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  4. 12th April 2008, 06:27 PM #4
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    I wish these bled like a Tdi!!!
    Mine is a proper pain to change filters etc sometimes. I had a good run last time though, after someone put ULP in the tank and I drained and changed all filters, the thing just started up, spluttered a little and ran fine

    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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  5. 12th April 2008, 08:08 PM #5
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    rar110
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    thanks everone for the replies. It looks like Ive managed to get all the air out. No air comes out the bleed screw or the top of the filter housing. Dave I'll look this thread up again next time I do a service and try your method.

    I runs ok, just a bit more shake at idle than before I did the service.
    L322 tdv8 poverty pack - wow
    Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
    Perentie 110 wagon ARN 48-699 another project
    Track Trailer ARN 200-117
    REMLR # 137
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