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Wet Weather problem - Hopefully resolved

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by emimec, Jan 8, 2013.

  1. emimec

    emimec Senior Member

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    Joined:
    May 3, 2010
    Location:
    London
    Your Mercedes:
    1989 124 series 260e, 1992 124 series 260e (written off, used as spares), 1991 260e 124 series
    Problem was in another post with same title... 124 series 260e petrol 1991.
    But to recap, drive through a puddle and engine either faultered or died.
    Decided to give the engine a good squirt of water from a squeeezy bottle while it was running, all ok on plugs, leads ignition amp crankshaft pulley etc, but then when water hit the coil, sparks all over the place, and engine died. Closer inspection when it ran again, revealed a spark going from the centre part of the windings to the metal frame.
    To cut the story short, changed the coil with one from a donor car, a Beru made one. Inspection of my original coil shows 4 cracks in the casing, and a tiny pin hole, which I assume was from where the sparking came from, photos attached.
    Only put this on the site to assist if anyone else gets a similar problem
    Bob
     

    Attached Files:

  2. television

    television Always remembered RIP

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    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Yes near impossible to seal once a hole for the plastic will have turned to carbon, so pleased its running well now
     
  3. cleverdicky

    cleverdicky Senior Member

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    Your Mercedes:
    MB
    Something like blue-tack might help in an emergency.
     
  4. huey

    huey Senior Member

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    Joined:
    Feb 13, 2011
    Location:
    Nottinghamshire
    Your Mercedes:
    W203 cdi 2004 Estate
    I hope it was the problem and it is now fixed:D very good for future reference thanks.
     
  5. davidsw

    davidsw Senior Member

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    Joined:
    May 24, 2011
    Location:
    cornwall
    Your Mercedes:
    Jaguar XKR ,Jaguar S-Type, Porsche Boxster S
    Nice to hear of some good hands on (or water on) diagnostics.
     
  6. television

    television Always remembered RIP

    Messages:
    164,074
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    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Nothing helps once leaking and holed, there are enough people who have tried fixing a leaking LOPT on TV sets, never found a thing that worked in my life.

    One must also consider the implications of the output flashing to the primary circuits.
     

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