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  1. #1
    Join Date
    Jan 2016
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    Wodonga Vic
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    38
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    633

    Default Land Rover First start up Issue

    Video- https://youtu.be/BM8b3zw0bGY

    So I bought a Defender 200tdi that has sat in a paddock under a tree for the past 5 years and today I returned to get it running.

    After cleaning the air filter, priming the lines, fitting a new battery, it fired right up no problems.

    But... there's a gas leak at the back of the motor, somewhere near the head gasket, there were no issues with the vehicle before it being parked up.

    I really hope it's not a crack or a head gasket, I've done 2 already in the last 12 months and don't really want to do another one.

    Surely a head gasket wouldn't fail just from sitting?

    I was hoping maybe a welch plug had rotted and it's just leaking crank case pressure, but it seems more like the pressure from a single cylinder escaping, No 4 and that would still mean pulling the head anyway

    I'm not familiar with these engines, or diesels for that matter.

    What are your thoughts?

  2. #2
    Join Date
    Dec 2018
    Location
    NSW
    Posts
    586

    Default

    Can you do a compression test to confirm loss of Compression? You've got 4 other cylinders to compare with with. Will also help with diagnosing overall health of the engine, although the mighty 200tdi is pretty robust.

    Another trick is to give it a good dose of degreaser in the area, then run it to see exactly where and what it is leaking. If you've done HG's before, you'll know that it'll be compressing either the cooling system, oil galleries (same as blow-by), or cylinder pressure to atmosphere, with the latter manifesting as a loss of fuel/air charge past the blown gasket to the outside of the engine.

  3. #3
    Join Date
    Sep 2016
    Location
    Canberra
    Posts
    12

    Default

    Easy peasy.

    Mix up some dish detergent and water in a spray bottle.

    Spray it around the noise. You'll see the bubbles.

    Check that the injector is seated properly.

    Check the water in the radiator.... oily? Gristles floating on top? Going down?

    Check the oil. Any water contamination?

    My thought is this is simply a stuck inlet valve. It isn't closing properly and we are hearing a little blowback. I sincerely hope you changed the oil.....that 5 year old stuff would be syrup. Change the oil, get the engine hot at idle. See if it goes away. If not pop the cover off and have a wee gander at the rockers and make sure there is an itty bitty bit of lash in them...

    Even if its a head gasket, this is a dead easy piece of work on these old donks... its almost enjoyable!

  4. #4
    Join Date
    Jan 2016
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    Wodonga Vic
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    Default

    Quote Originally Posted by Commander_Keen View Post
    Can you do a compression test to confirm loss of Compression? You've got 4 other cylinders to compare with with. Will also help with diagnosing overall health of the engine,
    G’day Commander,

    I’ll have to pick up a compression gauge so I can test the cylinders, it’s a tool I don’t have but probably should. When you need it, you need it!

    I’ll take the pressure washer and degreaser with me next time, probably this weekend.
    and a torch/mirror, it’s bloody hard to see back there.

    I just can’t imagine how a gasket would have failed from sitting doing nothing, I trust the sellers word that it was a good runner before he stopped driving it.

    I’m not too familiar with these engines or diagnosing their faults, but it looks like I will be soon!

    all part of owning a Land Rover i guess

  5. #5
    Join Date
    Sep 2016
    Location
    Canberra
    Posts
    12

    Default

    Looks like you need to do a lash check anyway... so its time to get a few tools

    https://www.landroverexpedition.com/...ve-clearances/

  6. #6
    Join Date
    Nov 2017
    Location
    Geelong, Australia
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    57
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    Default

    I’d think with that amount of leakage you’d possibly even see a missing piece of gasket.

    Seems to be running pretty smoothly though - I’d expect it to be rougher.
    Exhaust manifold perhaps?

    Steve

  7. #7
    Join Date
    Jan 2016
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    Wodonga Vic
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    Default

    Quote Originally Posted by OxxAndBert View Post
    I’d think with that amount of leakage you’d possibly even see a missing piece of gasket.

    Seems to be running pretty smoothly though - I’d expect it to be rougher.
    Exhaust manifold perhaps?

    Steve
    I really hoped it was the manifold but it feels like it's blowing straight out the back of the motor, somewhere between what felt like welch plug and the cylinder head, but it's hard to say because I was going by feel,

    you can hear my hand obstructing the flow when I put my hand against the back of the motor.

    Still starts and runs like a champ

  8. #8
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,945

    Default

    Quote Originally Posted by NedsHead View Post
    I was hoping maybe a welch plug had rotted and it's just leaking crank case pressure
    The welch plugs on the motors are in the water passages and have nothing to do with crank case pressures. I've been told by several mechanics that their purpose were to help remove the casting sands used in their production of the heads and blocks.
    I can't quite see how far your hand is in behind the motor, but it sound like, to me, that an exhaust manifold gasket has let go. It could be, that it was on it's way out when parked, and the rot continued as it was "parked" and that the start up was enough to blow that edge out.. To confirm this, apply some sealant to the area of blow out, and see if that stops the blowing effect.
    I wanted to become a mechanic, when I was young and FOOLISH.
    Kryn
    To grow old is mandatory, growing up is optional.

  9. #9
    Join Date
    Mar 2014
    Location
    South of Adelaide
    Posts
    1,225

    Default

    I'm a bit late to the party but i don't think it would run that well with a blown head gasket, it should be missing very bad, if it was leaking that much compression, i doubt that cylinder would fire. One way to check is to crack the injector lines one at a time while it is running and listen to how much the engine noise changes, If the back cylinder makes little to no difference, blown head gasket.

  10. #10
    Join Date
    Jan 2016
    Location
    Wodonga Vic
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    38
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    633

    Default

    Quote Originally Posted by snapatap View Post
    I'm a bit late to the party but i don't think it would run that well with a blown head gasket, it should be missing very bad, if it was leaking that much compression, i doubt that cylinder would fire. One way to check is to crack the injector lines one at a time while it is running and listen to how much the engine noise changes, If the back cylinder makes little to no difference, blown head gasket.
    I hope you're right! it does seem odd that it starts and runs so well.
    to me, it feels and sounds like exhaust and it's coming from the back of the block/head

    The plan was to get it running and drive it home where I can work on it under the carport out of the weather, the new plan is to hire a car trailer.

  11. #11
    Join Date
    Nov 2017
    Location
    Geelong, Australia
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    Default

    If hiring a trailer, be aware the Landy is over 2T by itself - so not legal on your average hire trailer. typically they’ll only take a 1200-1400kg load.

    Steve

  12. #12
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    Jan 2016
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    Wodonga Vic
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    Default

    Finally got her home

    IMG_2022.jpg

  13. #13
    Join Date
    Nov 2017
    Location
    Geelong, Australia
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    Default

    Nice. Looks pretty solid under the general storage dirt.

    Steve

  14. #14
    Join Date
    Dec 2018
    Location
    NSW
    Posts
    586

    Default

    Keep an eye on it, they're contagious.

  15. #15
    Join Date
    Jan 2016
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    Wodonga Vic
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    Default

    Quote Originally Posted by OxxAndBert View Post
    Nice. Looks pretty solid under the general storage dirt.

    Yeah it's a solid rig, I can't find any damage or rust to be concerned about, window seals are all rotted and need replacing, it's leaked all it's power steering fluid somewhere so that'll need addressing. I'll slowly go right over it on the weekends and get it ready for the road bush
    Quote Originally Posted by Commander_Keen View Post
    Keep an eye on it, they're contagious.
    I've only had it 2 days and I've already had offers...

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