Coolant leaking onto belt w203

Discussion in 'Engine' started by popalock, Nov 10, 2019.

  1. popalock

    popalock Member

    Messages:
    47
    Joined:
    Sep 4, 2012
    Car:
    W203 C Class estate C220 CDI
    Hi have a w203 c class 220 cdi.

    the coolant is rapidly leaking onto one of the belts, I can’t tell where from exactly. The car is parked at an A road petrol station. I noticed there was a problem when steam/vapour was coming out of the front of the car so stopped to check it out.

    i don’t know if the car safe to drive for 25mins to my trusted Inde MB mechanic.

    I also don’t know if breakdown recovery will take me given the car is a runner (haven’t fully broken down).

    many advice?

    btw I ran iCarsoft diagnostics and nothing came up
     

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  2. Trickythemerc

    Trickythemerc Hardcore MB Enthusiast

    Messages:
    1,011
    Joined:
    Feb 1, 2015
    Location:
    South Manchester
    Car:
    CLK 220 CDI Sport 2009
    Most likely the water pump, depending on how quickly the water is coming out you may be ok just topping up and driving to your indi. If it is poring out then your recovery should cover it.
     
  3. OP
    OP
    popalock

    popalock Member

    Messages:
    47
    Joined:
    Sep 4, 2012
    Car:
    W203 C Class estate C220 CDI
    Yeah it’s a continuous little stream rather than drops. So recovering then.

    is an Inde necessary or any mechanic is fine for this job?
     
  4. Trickythemerc

    Trickythemerc Hardcore MB Enthusiast

    Messages:
    1,011
    Joined:
    Feb 1, 2015
    Location:
    South Manchester
    Car:
    CLK 220 CDI Sport 2009
    A water pump on a 646 engine is pretty easy, but also easy to get into trouble with. There are different lengths and diameters of bolts and getting the wrong length bolt in the wrong tapping can cause problems. Torque values on the bolts need to be spot on as the pump uses a steel gasket, when I did mine I changed all the idlers, belt and tensioner. I even did the alternator clutch pulley as a bit of a belt and braces job. Choice of pump is either genuine or after market, I went genuine parts all the way with mine for peace of mind.
     
  5. Kerabo

    Kerabo Hardcore MB Enthusiast

    Messages:
    119
    Joined:
    May 20, 2018
    Location:
    Spalding Lincs
    Car:
    2006 C220 Estate
    Mine done that and then the belt came off as the waterpump bearings failed. If you remove the belt you should feel them or you may hear them anyway.
    Fitted two water pumps in two weeks one on my C Class One on a E220 cdi
     

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