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!

Disco 1 Rough running

Discussion in 'Land Rover Discovery' started by SteveD, Jan 9, 2016.

< Previous Thread | Next Thread >
  1. SteveD

    SteveD Senile Member

    Joined:
    Mar 14, 2013
    Posts:
    1,254
    Likes Received:
    14
    Location:
    Waltham Abbey
    It's been running rough for a while. Yesterday it started running really rough.

    I think I may have found the problem :)

    2016-01-09 12.00.32.jpg
     
  2. Vinlander

    Vinlander Well-Known Member

    Joined:
    Oct 22, 2015
    Posts:
    695
    Likes Received:
    114
    Location:
    Kent
    That's going to need more than a feeler gauge and a spanner :eek:
     
  3. davcud

    davcud Well-Known Member

    Joined:
    Jun 20, 2013
    Posts:
    2,931
    Likes Received:
    235
    Location:
    Bolton
    Bit of chemical metal be fine for few thousand miles lmao
     
  4. Vinlander

    Vinlander Well-Known Member

    Joined:
    Oct 22, 2015
    Posts:
    695
    Likes Received:
    114
    Location:
    Kent
    Don't forget to file the ends so it can get purchase, and use a ruler to make sure it's glued on straight.
    Don't know why I didn't try this on my broken halfshaft.
     
  5. Gazbo

    Gazbo Well-Known Member

    Joined:
    Dec 23, 2010
    Posts:
    3,951
    Likes Received:
    3,094
    Location:
    Cooktown, North Queensland, Australia.
    Pretty impressive that it was running at all, let alone "rough".
     
  6. SteveD

    SteveD Senile Member

    Joined:
    Mar 14, 2013
    Posts:
    1,254
    Likes Received:
    14
    Location:
    Waltham Abbey
    I've got a spare somewhere, the trouble is I haven't seen it since I tidied the workshop up but it's around somewhere. The only thing I need to buy is one rocker shaft stud (the rear one) that has sheared off so I won't be able to get that before Monday. With a bit of luck it will be back running on 4 again. One of the valve stem caps seems to have gone awol but looking at the pad on that rocker arm I think it may have been missing for a while so I'll get a set of them as well
    2016-01-09 21.52.14.jpg
     
  7. SteveD

    SteveD Senile Member

    Joined:
    Mar 14, 2013
    Posts:
    1,254
    Likes Received:
    14
    Location:
    Waltham Abbey

    Yes I was impressed it got me home. But the front 2 pots were ok lol. Mind you I had to use low range to get on the drive.
     
  8. Vinlander

    Vinlander Well-Known Member

    Joined:
    Oct 22, 2015
    Posts:
    695
    Likes Received:
    114
    Location:
    Kent
    It's sort of not that bad, unless that rocker is actually missing. The shaft doesn't have to transfer torque, it just holds the rocker pivots, so as long as it's not bent (wouldn't take long) you're just starving on 2, and 1 if the last bolt sheared while running. Pretty bad then, but a testament to the strength of these old engines that it ran at all. As long as there's something left of the rockers it'll let some spent gas out and not blow itself up.
    Surprised there isn't more damage if rockers and spacers started falling out.
     
  9. Mort1969

    Mort1969 Member

    Joined:
    Aug 3, 2015
    Posts:
    75
    Likes Received:
    4
    Location:
    Aylesbury, Bucks
    Gaffer tape will fix that :)
     
  10. SteveD

    SteveD Senile Member

    Joined:
    Mar 14, 2013
    Posts:
    1,254
    Likes Received:
    14
    Location:
    Waltham Abbey
    Looks like I've discovered where the missing valve stem cap went. No 8 pushrod isn't moving at all so I guess it went down the pushrod tube and has jammed the follower.

    Oh well, given the welding and brakes that will need doing for the next MOT I think this Disco is dead.
     
  11. Vinlander

    Vinlander Well-Known Member

    Joined:
    Oct 22, 2015
    Posts:
    695
    Likes Received:
    114
    Location:
    Kent
    He's not dead, he's pinin' for the fjords :(
     
    Zed. likes this.
  12. Zed.

    Zed. Well-Known Member

    Joined:
    Jul 24, 2015
    Posts:
    506
    Likes Received:
    144
    Location:
    Ammanford Wales
    Genius :cool:

    Rich.
     
  13. SteveD

    SteveD Senile Member

    Joined:
    Mar 14, 2013
    Posts:
    1,254
    Likes Received:
    14
    Location:
    Waltham Abbey
    Well I decided to whip the head off to have a look and sure enough the missing cap was stuck in the number 8 cam follower, holding the follower in the up position, so I guess for the price of a head gasket I might as well put in back together* :)

    * Now I've got over throwing my dummy :)
     
< Previous Thread | Next Thread >