300SE starting problem

Discussion in 'Engine' started by Catman, Jun 5, 2011.

  1. Catman

    Catman Member

    Messages:
    37
    Joined:
    Dec 19, 2005
    Location:
    Cambridgeshire
    Car:
    Mercedes E240
    My W126 has become difficult to start. Unless I depress the accelerator pedal the engine just dies. The only way I can get it start is to keep the accelerator depressed until the water temperature is almost 80 degrees - then I can take my foot of the pedal and all is OK. When I have been out on the road the engine did die when I was in a queue of traffic, although it did restart after a couple of turns of the ignition switch. Also, when it is ticking over, the engine revs rise and fall occasionally. My neighbour says that I should change the fuel filter (I have never changed it in the 9 years that I have had the car) - would this improve matters? What do any members think might be the problem?:(
     
  2. ianrandom

    ianrandom Hardcore MB Enthusiast

    Messages:
    998
    Joined:
    Feb 19, 2010
    Location:
    Berks mainly, UK. Devon too a lot of the time.
    Car:
    1986 420SE, 1990 420SEC, 1989 2CV6.
    Cap and rotor arm would be the first thing to check i would think. Apparently the 300's go through these quite quickly.
     
    1 person likes this.
  3. mazza

    mazza Hardcore MB Enthusiast

    Messages:
    457
    Joined:
    Oct 1, 2009
    Location:
    Middlesex
    Car:
    190e 2.3-16v and 190e 3.2 AMG

    Hi

    fuel Filter should be changed regularly, the KE Jetronic fuel system requires excellent fuel filtration in order to provide the fuel distributor with the required fuel pressure.

    dizzy cap and rotor arm should also be checked and replaced if necessary as per Member "ianrandom" post.

    mazza
     
    1 person likes this.

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