gloe plugs

Discussion in 'Engine' started by cadmans, Sep 5, 2011.

  1. cadmans

    cadmans New Member

    Messages:
    1
    Joined:
    Sep 5, 2011
    Car:
    merc c250 td
    hi ive got a merc c250 td its getting hard to start in the morning the glow light is ok but it takrs about 4/5 times to start will i need new glow plugs and were are they on the engine left or right hand side ive changed the before on a ford . ive had this car 9 mth its got high milage but runs ok when started thanks
     
  2. Tinkerer

    Tinkerer Active Member

    Messages:
    391
    Joined:
    May 5, 2011
    Location:
    Norfolk
    Car:
    W210 E220 CDi
    They should be on the near side of the engine and the control unit is also on that side on the top of the wing. You probably already know if you have done them on a ford before but check for continuity first to find the ones that are open circuit.
     
  3. SilverSaloon

    SilverSaloon MB Enthusiast

    Messages:
    7,759
    Joined:
    Mar 16, 2004
    Car:
    1994 W124 E300D Estate, 1985 R107 280SL
    i'm surprised the glow plug light works correctly if any of them are dead.

    does the light come on and then off when you turn the key to pos 2 (not starting engine).... and never comes back on when the engine is running?

    you can easily check which glowplugs are dead by testing them at the relay end with a multimeter....

    check out this link for a "how to":

    Mercedes Diesel Glow Plug Repair
     
  4. Dieselman

    Dieselman Banned

    Messages:
    34,206
    Joined:
    Jul 13, 2003
    Car:
    Peugeot 403 Convertible
    It's more likely to be an air leak causing poor starting.
     
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