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Thread: Runaway Diesel engines

  1. #1
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    Runaway Diesel engines

    Good evening,

    I have just been watching some streaming on U-Tube re Runaway Diesel engines, looks like a terrifying experience to me.

    My question to the forum, (1) has anyone experienced it with a Landrover, no matter what model
    (2) with a Perentie Isuzu Diesel in mind, I would like to know what to do if it ever happened, how would you stop the engine.?

    Sensible suggestions appreciated.

    Cheers

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    If its a manual don't dip the clutch and steak it on the brakes.

    If it's an automatic, try and choke it somehow. .... squeeze the intake tube?

    I know a bloke who had a 300tdi runaway up a sandune, luckily he knew exactly what it was and stalled it.

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    I've heard of a CO2 fire extinguisher discharged into the intake.
    Also mechanically blocking the intake (ie a flap of rubber etc that ideally wont get sucked into the engine).

    On the modern engines at least, I believe there is a number of safety features to prevent this. The TDCi electronic throttle is one such means.
    -Mitch
    'El Burro' 2012 Defender 90.

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    I had it happen to me with a Fordson tractor motor in my cabin cruiser on the Murray River decades ago. I had tooted my horn, waiting for a lock to open and couldn't shut the motor down. Wouldn't respond to kill switch

    Ended up running it into the bank and thankfully motor stalled. When lock opened the Lock Master commented on the boom I made when I hit the bank, it was steel hull. Problem only happened once in my ownership.

    Sorry not LR but brought back memories

    Cheers Paul

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    Quote Originally Posted by poundsterling View Post
    Good evening,

    I have just been watching some streaming on U-Tube re Runaway Diesel engines, looks like a terrifying experience to me.

    My question to the forum, (1) has anyone experienced it with a Landrover, no matter what model
    (2) with a Perentie Isuzu Diesel in mind, I would like to know what to do if it ever happened, how would you stop the engine.?

    Sensible suggestions appreciated.

    Cheers
    I can't answer within your parameters, but I will tell you of the Tune Up specs of the GM diesel in the M113A1 APC the army had. It had a GM TurboDiesel V6, and a nice little jigger it was too. When You did the tune up sequence, you did it to a predetermined sequence. This sequence was listed on a series of lists, on a clipboard. So what, I hear you ask. Well, the clipboard was made from 10mm aluminium. The idea was, if the GM ran away, you stuck the clipboard over the exposed ( you were tuning it up, remember? ) air intake. Fingers were optional. Those GMs would run on their own oil if they got away. Scary stuff.
    ​JayTee

    Nullus Anxietus

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    The vertical solenoid near the dipstick does the same job as that stupid EDIC .The solenoid on the fuel filter works a butterfly valve in the entrance to the manifold.Mine works with a push button switch but could be opperated by over revs or in conjunction with the fuel shutoff .The butterfly valve in my case is Isuzu but they can be bought after market


    AM


    Air Intake Shutoff Valves

    Air intake shutoff valves (often referred to as AISV or ASOV) and systems provide emergency overspeed shutdown protection for diesel engines and are the most effective way of preventing a runaway situation. The valves completely block the engine air intake system, cutting off an uncontrolled external fuel source and the air required to keep the engine running.
    Attached Images Attached Images

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    All quite useful erudite responses here to be sure....
    Most runaways nowadays are blown compressor (turbo) seals though-- letting oil into the charge tube and the engine goes off on a tangent as it were.
    Block the intake is the only sure fire way of killing a runaway.
    Sometimes this is hard... if the vehicle is a manual trans, options are clear. If auto, options are restricted...
    Biblical advice is: Block the intake. Quick.

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    Ok,, I can see the turbo oil seals pumping oil in,,

    but on a NA engine?
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
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    '21 to Infinity and Beyond!


    1988 Isuzu Bus. V10 15L NA Diesel
    Home is where you park it..

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    Injector failure perhaps.
    Or blow-by. It will positively reinforce itself.
    -Mitch
    'El Burro' 2012 Defender 90.

  10. #10
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    Quote Originally Posted by Pedro_The_Swift View Post
    Ok,, I can see the turbo oil seals pumping oil in,,

    but on a NA engine?
    Faulty pump. Had this happen to a Mack truck - just fitted the pump after a reconditioning. All hell broke loose when we started it. Had to choke with the rubber coupling on the intake.
    Cheers......Brian
    1985 110 V8 County
    1998 110 Perentie GS Cargo 6X6 ARN 202516 (Brutus)

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