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Thread: Neon Green Fluid + Grease Splatter under auto tranny

  1. #31
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    Quote Originally Posted by kelvo View Post
    More likely the welsh plug...
    Let’s hope so, area around plug seemed free-ish of residue etc (well, a lot better than everything around it). Here’s a pic from a better angle:

  2. #32
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    Or...... someone's re-drilled a manifold stud hole, and went a little deep.

  3. #33
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    Smile

    How does that green stuff feel to the touch . . . . oily / greasy or wet ??
    BTW . . . . . great pics. Hope the excess grease is just leftover from the power gun . . . the good guys wipe it clean after. At least better than none at all.
    Any hints on locating that welsh plug without destroying my soft/supple hands[/QUOTE] . Using the soft supple/brain works fine

  4. #34
    discorevy is offline ChatterBox Silver Subscriber
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    Quote Originally Posted by BrightBlue View Post
    Let’s hope so, area around plug seemed free-ish of residue etc (well, a lot better than everything around it). Here’s a pic from a better angle:


    Most of the fluid will be running down from the plug out of view as its behind the exhaust manifold gasket , you will just have to fix it , at least you shouldn't break any exhaust studs if the gasket was done recently.
    Not sure why someone would spray paint the oil cooler though, and as someone mentioned, refit the oil switch wire

  5. #35
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    Quote Originally Posted by BrightBlue View Post
    Hey all,

    Finally got around to taking a look at her underbits and found the following;

    - A neon green fluid what looks to be mixed with oil?

    - What looks to be a grease explosion.

    First time wrenching on a D2 (Land Rover in general) and have not seen anything like this before haha.

    Any hints?

    Grease and coolant

  6. #36
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    Welsh plug

    Hi, can you tell me what's a Welsh plug? Good pictures btw.

  7. #37
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    Quote Originally Posted by Barleywine View Post
    Hi, can you tell me what's a Welsh plug? Good pictures btw.
    First up it should be welch .. I think mainly because it's not from Wales!

    Core plug is another term.
    When they make the casting, they need to allow for access holes from where the metal is poured into the cast and to create the coolant galleries too.
    So inside the engine block are empty spaces where coolant flows to keep the engine cool.
    The welch, or core plugs are literally that .. a plug to seal those access holes. They're usually pressed in, but as seen earlier in this thread, they also make them screw in too.

    They can rust, and cause leaks too.
    Arthur.

    '99 D1 300Tdi Auto
    '03 D2 Td5 Auto

  8. #38
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    Hey BrightBlue,

    I'm a newcastle local and happy to lend a hand/advice if you like? Also have a nanocom if you need faults cleared or testing done.

    Also noticed there appears to be exhaust putty on #5 so might still have a warped manifold? When you have the manifold off to do the plug run a straight edge over it.

    Might need machining flat? I can recommend a place to ceramic coat if you need or want it done?

    Cheers Craig

  9. #39
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    Quote Originally Posted by AK83 View Post
    First up it should be welch .. I think mainly because it's not from Wales!

    Core plug is another term.
    When they make the casting, they need to allow for access holes from where the metal is poured into the cast and to create the coolant galleries too.
    So inside the engine block are empty spaces where coolant flows to keep the engine cool.
    The welch, or core plugs are literally that .. a plug to seal those access holes. They're usually pressed in, but as seen earlier in this thread, they also make them screw in too.

    They can rust, and cause leaks too.
    In North America they are also referred to as frost plugs - if your antifreeze / antiboil is not at the correct mixture and the temp gets cold enough the fluid can freeze. The "frost" plugs will burst preventing the block from cracking. Bit like a safety valve.

  10. #40
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    Quote Originally Posted by BrightBlue View Post
    Let’s hope so, area around plug seemed free-ish of residue etc (well, a lot better than everything around it). Here’s a pic from a better angle:
    Id say that is leaking look at the white stain running out of it down the block

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