W124 Diesel Pump O rings leaking

Discussion in 'Engine' started by mhuk, Jan 16, 2012.

  1. mhuk

    mhuk New Member

    Messages:
    26
    Joined:
    Oct 29, 2011
    Car:
    w124 300td
    Hello,

    Quick questions. I'm running WVO/Diesel on my 300te (333900miles) It's a jan reg 93 estate.

    I have the spline tool. The front two injector bosses had new seals about 5000miles. The back two are now leaking and when parked up hill I need to crank it over lots for some fuel. Also leaving stains everywhere.

    Do I need to remove the inlet manifold to replace the last 4 O rings?

    Space looks tight. Car is in London for the week with me and spline tool (it's a 1/2" tool) is back home.

    Many thanks

    Martin
     
  2. SilverSaloon

    SilverSaloon MB Enthusiast

    Messages:
    7,759
    Joined:
    Mar 16, 2004
    Car:
    1994 W124 E300D Estate, 1985 R107 280SL
    i do hope its really a 300td and not a 300te ;) lol

    anyway back your questions;

    yes the manifold will have to come off if its a multivalve. i have no idea about the earlier cars. (1993 was the changeover year so hard to tell from the date).

    have you checked the orings on the clear pipes too? these are easier to replace and may just solve the issue, unless you can see the leaking fuel?
     
  3. OP
    OP
    mhuk

    mhuk New Member

    Messages:
    26
    Joined:
    Oct 29, 2011
    Car:
    w124 300td
    Hi,
    Had to look. It's a 300td

    Yes the estate ;-)

    It's the older engine so not a multi. I can see fuel leaking. It's always wet around the base of the splines.



    Thanks
     
  4. SilverSaloon

    SilverSaloon MB Enthusiast

    Messages:
    7,759
    Joined:
    Mar 16, 2004
    Car:
    1994 W124 E300D Estate, 1985 R107 280SL
    i assume if you can physically get to them then you can do the job with the manifold on. it would make no difference to the job, just a case of can you get access without removing the manifold.

    i would guess it would need to come off.
     
  5. stephen290361

    stephen290361 New Member

    Messages:
    22
    Joined:
    Dec 22, 2011
    Car:
    C250 TD 1998
  6. SilverSaloon

    SilverSaloon MB Enthusiast

    Messages:
    7,759
    Joined:
    Mar 16, 2004
    Car:
    1994 W124 E300D Estate, 1985 R107 280SL
    indeed. dont touch anything under the copper washer. I fact touch as little as possible. pull off the oring, take off the copper washer with a small screwdriver, replace and refit. dont start taking stuff out if you dont need to. there is a how-to on here detailing how to do it on a W210 and it will be more or less the same on yours
     
  7. OP
    OP
    mhuk

    mhuk New Member

    Messages:
    26
    Joined:
    Oct 29, 2011
    Car:
    w124 300td
    Thanks guys. Wish me luck !
     
  8. vfr_chris

    vfr_chris New Member

    Messages:
    2
    Joined:
    Apr 11, 2012
    Car:
    W124 E250D
    Sorry to resurrect a dead thread but I need to perform this job. No problem obtaining the splined tool, but MB informs me that:

    Injector Washers are £1.65 + VAT each and unfortunately the rubber o-rings are part of the injector and cannot be brought separately.
    (An injector is £214 + VAT each).


    Which rubber o-rings do I need to obtain? Are they the same Viton ones that I've done most of the fuel lines with so far?

    TIA for any advice and thanks for the write ups so far, good to know what I'm attacking once I get everything together.
     
  9. vfr_chris

    vfr_chris New Member

    Messages:
    2
    Joined:
    Apr 11, 2012
    Car:
    W124 E250D
  10. carat 3.6

    carat 3.6 MB Enthusiast

    Messages:
    3,923
    Joined:
    May 11, 2011
    Location:
    Buckinghamshire, yuppie central 1985.
    Car:
    96 e300d, 88 w124 superturbodiesel, 90 bmw E30 v8, + "others"
  11. bolide

    bolide MB Enthusiast

    Messages:
    3,726
    Joined:
    Oct 8, 2005
    Location:
    Brighton
    Car:
    BMW E39 525 Diesel Touring
    I see the parts department at MB UK has been smoking crack again

    Nick Froome
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.