1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Welcome To LandyZone!

    LandyZone is the biggest Land Rover forum on the net. We have plenty of very knowledgable members so if you have any questions about your Land Rover or just want to connect with other Landy owners, you're in the right place.

    Registering is free and easy just click here, we hope to see you on the forums soon!

Something completely different

Discussion in 'Range Rover' started by oakey, Jun 14, 2018.

< Previous Thread | Next Thread >
  1. oakey

    oakey Well-Known Member

    Joined:
    Dec 26, 2010
    Posts:
    770
    Likes Received:
    105
    Location:
    Mull of Kintyre
    I have a very old wee digger.
    When I make it work too hard, engine almost dies and CLOUDS of black smoke from exhaust.
    Can a diesel guru tell me whats wrong please?
    Pretty please?
    And yes before the forum police appear, I know it is not a Range Rover nor even a Land Rover
     
  2. jamesmartin

    jamesmartin Well-Known Member

    Joined:
    Dec 8, 2010
    Posts:
    75,488
    Likes Received:
    8,191
    Location:
    louth lincs
    blocked air intake or injectors is were id start
     
  3. oakey

    oakey Well-Known Member

    Joined:
    Dec 26, 2010
    Posts:
    770
    Likes Received:
    105
    Location:
    Mull of Kintyre
    I will check the air intake
    Ta much
     
  4. wammers

    wammers STILL BREATHING. Donater

    Joined:
    Oct 19, 2008
    Posts:
    51,108
    Likes Received:
    6,730
    Location:
    Preston Lancs.
    To much fuel or to little air.
     
  5. jamesmartin

    jamesmartin Well-Known Member

    Joined:
    Dec 8, 2010
    Posts:
    75,488
    Likes Received:
    8,191
    Location:
    louth lincs
    as above might even be worth checking tappets
     
  6. oakey

    oakey Well-Known Member

    Joined:
    Dec 26, 2010
    Posts:
    770
    Likes Received:
    105
    Location:
    Mull of Kintyre
    She revs fine, its only under power she throws a wobbly
     
  7. tarphenry

    tarphenry Well-Known Member

    Joined:
    Oct 6, 2014
    Posts:
    1,084
    Likes Received:
    225
    Location:
    bury lancs
    I would think short of air,when it works,it gets more fuel and that needs more air.
     
  8. Datatek

    Datatek Well-Known Member

    Joined:
    Feb 5, 2009
    Posts:
    30,043
    Likes Received:
    611
    Location:
    Near Poitiers SW France
    Mine did that, it was bacterial growth in the diesel.
     
  9. oakey

    oakey Well-Known Member

    Joined:
    Dec 26, 2010
    Posts:
    770
    Likes Received:
    105
    Location:
    Mull of Kintyre
    Had a look at the air filter and it was pretty yukky so will replace that first.
    Diesel is a bit grotty so may change fuel filter too
     
  10. oakey

    oakey Well-Known Member

    Joined:
    Dec 26, 2010
    Posts:
    770
    Likes Received:
    105
    Location:
    Mull of Kintyre
    I was going to clean the plugs but couldnt find any
     
  11. tomcat59alan

    tomcat59alan Well-Known Member

    Joined:
    Apr 3, 2011
    Posts:
    10,017
    Likes Received:
    1,728
    Location:
    wirral and triquivijate
    Knob, :D:D
     
  12. oakey

    oakey Well-Known Member

    Joined:
    Dec 26, 2010
    Posts:
    770
    Likes Received:
    105
    Location:
    Mull of Kintyre
  13. Wazzajnr

    Wazzajnr Well-Known Member

    Joined:
    Apr 25, 2016
    Posts:
    1,337
    Likes Received:
    353
    Location:
    Chorley
    The hydraulic pressure relief is set wrong allowing the hydraulic pump to stall the engine. Pump still tries to keep the revs up so is pumping far too much diesel in for the engine speed.
    It's either a case of the engine is weaker now so can't cope with the standard pressure or the relief valve is faulty/tampered with etc etc

    Find the relief valve, back it right off. Get someone to operate one of the rams against a fixed stop (raising the dozer blade to full height works well)
    Then slowly turn relief valve until engine revs drop by about 10% and it should sit there all day with no smoking.
     
    raywin, Henry_b and tomcat59alan like this.
  14. oakey

    oakey Well-Known Member

    Joined:
    Dec 26, 2010
    Posts:
    770
    Likes Received:
    105
    Location:
    Mull of Kintyre
    Ah right ok that makes sense. I havent looked for PRV but I will.
    The engine almost stalls but the machine doesnt go up the hill I want it to.
    And its not a steep hill just a slope
    If I adjust the relief valve will the machine not just sit there without smoking but without going up the hill too?
     
  15. Wazzajnr

    Wazzajnr Well-Known Member

    Joined:
    Apr 25, 2016
    Posts:
    1,337
    Likes Received:
    353
    Location:
    Chorley
    Ah, now, that sounds like one of the hydraulic motors is not working correctly.
    You will still need the prv to be correct.
    Is the track tension set correctly? Are the links worn? Sprockets worn?
    If the engine is so weak that it's stalling due to weakness and you set the prv to that then yes, it won't make it up the hill but I doubt that's the case. The track motors need far less pressure than the rams.
    Sounds like something is jamming up to me.
     
  16. oakey

    oakey Well-Known Member

    Joined:
    Dec 26, 2010
    Posts:
    770
    Likes Received:
    105
    Location:
    Mull of Kintyre
    I will have a good look tomorrow thanks Wazza
     
< Previous Thread | Next Thread >