Plenum chamber help

Discussion in 'Bodywork' started by bostonmj, Sep 6, 2011.

  1. bostonmj

    bostonmj Active Member

    Messages:
    189
    Joined:
    Dec 20, 2010
    Location:
    Gloucestershire
    Car:
    SL350 but miss my SL500
    On Sunday I cleaned under the bonnet and noticed that there was some residual water left sitting in what I think is the plenum chamber. Top right hand corner of the engine bay, a plastic grill can be removed providing access to the plastic lined chamber. This chamber is directly under the right hand side air intake on the bonnet.

    I put my hand into the chamber, dried it out with a cloth but couldnt find a drain hole. Can anyone help me locate it?

    2002 SL500 (R230)
    Tks

    Martyn
     
  2. OP
    OP
    bostonmj

    bostonmj Active Member

    Messages:
    189
    Joined:
    Dec 20, 2010
    Location:
    Gloucestershire
    Car:
    SL350 but miss my SL500
    Cant believe that no one has offered any advice!
     
  3. Alps

    Alps MB Enthusiast

    Messages:
    7,175
    Joined:
    Nov 29, 2002
    Location:
    London\Essex
    Car:
    E55 2004 Silver, E63 Weistec AMG(SOLD), E55 2004 Silver(SOLD), C36 AMG 1997 (SOLD)
    got any pics, might help, the w211 has a pipe that gets kinked and can hold water the same way, look for a rubber pipe that could be kinked in the engine bay leading to a wing, hopefully some SL experts will come along soon.
     
    1 person likes this.
  4. donubenz

    donubenz Active Member

    Messages:
    237
    Joined:
    Jun 16, 2011
    Location:
    Grimsby
    Car:
    w211 r230
    I have a similar pool in mine which is very noticeable after washing. There is a filter box to the right of the chamber, on the bulkhead that the water drains into then runs away assuming no blockages due to leaves/debris etc. The drain below the screen where the wipers go also pipes into it. I had a good feel around and discovered that if the chamber you are talking about does not drain properly it has an overflow that drains directly out of the filter box so the heater does not pull in water if it is blocked. I could not see any problem with mine so put some water in with a hose to flush and it runs out at the back of the wheel well lining. I could not access this from the wheel well without taking off the splash guard but it flowed out OK. I still get the pool visible through the grill after washing but now assume they all do this?
    Let me know if you find a cure!
    Good luck, Don
     
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