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Thread: diagnose this - frothy diesel

  1. 13th May 2024, 09:20 PM #1
    FNQLR
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    diagnose this - frothy diesel

    So sometimes when i fill up - the tank is full of froth - it overflows immediately even with only fumes left in the tank.

    also

    sometimes the motor wont (start) turn over due to what I assume is fluid of some sorts in the cylinder. shell turn a bit then seize. I'll have to wait a few minutes the try again at which time she starts. <- this only happens after a long time between starts, overnight time periods.

    I kinda know the head is cracked, but really want you guys to offer an alternative viable explanation.
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  2. 13th May 2024, 09:40 PM #2
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    leaking injector or injector seals
    Dave

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  3. 13th May 2024, 09:48 PM #3
    FNQLR
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    Quote Originally Posted by Blknight.aus View Post
    leaking injector or injector seals
    did them last week, still the same. seals that is.

    anyway to diagnose an injector leak?
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  4. 13th May 2024, 09:59 PM #4
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    Quote Originally Posted by FNQLR View Post
    did them last week, still the same. seals that is.

    anyway to diagnose an injector leak?
    other than frothy fuel in the tank and pulling the injectors then getting them tested, not that I know. The cylinder balances will be off on the injector thats leaking but you'll get that from a bad injector seal or a cracked head
    Dave

    "In a Landrover the other vehicle is your crumple zone."

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  5. 14th May 2024, 11:44 AM #5
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    Can't say anything about foaming in the fuel tank, but how is Your oil level?

    If You kinda know? there is a crack in the head?

    I had a crack in the injector #1 socket, and I drained ~12 liters of oil(and diesel) from the sump on mine. Coolant was fine.

    Had the head welded and have been fine ever since.
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  6. 14th May 2024, 12:26 PM #6
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    Quote Originally Posted by FNQLR View Post
    So sometimes when i fill up - the tank is full of froth - it overflows immediately even with only fumes left in the tank.
    You are probably using a high flow bowser. Start dispensing slowly, gradually increasing the flow.
    Diesel will always froth during transfer and create static electricity.
    If you don't like trucks, stop buying stuff.
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  7. 15th May 2024, 08:06 AM #7
    FNQLR
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    How hard are the glowplugs to remove?

    I'm thinking of removing them one by one until the hydraulic locking releases.
    At least then I can swap out that injector - hopefully it is just a leaky injector
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  8. 15th May 2024, 08:11 AM #8
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    Quote Originally Posted by FNQLR View Post
    How hard are the glowplugs to remove?

    I'm thinking of removing them one by one until the hydraulic locking releases.
    At least then I can swap out that injector - hopefully it is just a leaky injector
    This thread may help.
    ​JayTee

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  9. 15th May 2024, 08:21 AM #9
    FNQLR
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    Quote Originally Posted by Dervish. View Post
    Can't say anything about foaming in the fuel tank, but how is Your oil level?

    If You kinda know? there is a crack in the head?

    I had a crack in the injector #1 socket, and I drained ~12 liters of oil(and diesel) from the sump on mine. Coolant was fine.

    Had the head welded and have been fine ever since.
    Oil level is rock solid, as far as I can tell there's zero diesel or water contamination.
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  10. 15th May 2024, 08:22 AM #10
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    Of course, if its cyl #5 you're screwed... lol. Not really, I guess if yo remove the first four and it still locks up you've narrowed it down..😎
    ​JayTee

    Nullus Anxietus

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