500sl misfire loss of power

Discussion in 'Engine' started by wilcer0, Aug 23, 2011.

  1. wilcer0

    wilcer0 New Member

    Messages:
    5
    Joined:
    Aug 23, 2011
    Car:
    1990 500 SL and 2006 S Class
    Hi. I am a new member. I have a 1990 500sl that starts first time every time. However, there is a slight misfire at about 1500 revs and the power seems to be down. Also, for no reason, the power cuts almost completely and I have to press the accelerator to the floor to get the car to move at all. This is cured, as often as not, by switching off and starting again. Have replaced plugs. leads, dis caps and rotor arms, one coil and fuel filter, with no change. Any ideas?
     
  2. EDZ649

    EDZ649 Hardcore MB Enthusiast

    Messages:
    4,001
    Joined:
    Jan 25, 2009
    Location:
    1066 Country
    Car:
    R129 SL600 V12
    Hi and welcome.

    If you have replaced all the ignition components I would be looking at the MAF.
     
  3. OP
    OP
    wilcer0

    wilcer0 New Member

    Messages:
    5
    Joined:
    Aug 23, 2011
    Car:
    1990 500 SL and 2006 S Class
    Ta

    Thanks for prompt reply. I will clean the MAF and see what happens.
     

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