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Help cant find source of coolant leak

Discussion in 'Technical Q&A' started by dhs-9, Aug 5, 2006.

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  1. dhs-9

    dhs-9 Formula Junior

    Feb 6, 2004
    292
    #1 dhs-9, Aug 5, 2006
    My 328 is leaking coolant. When I run the car it leaks a drop a second after I shut it down it drips much more. The dripping is coming from above teh exhaust pipe and heat shield just next to and above the oil filler plug. The frame also drips in this area. I have checked the thermostat housing dry. Checked the small connector hose clamps off the thermostat to the aluminum pipe dry. Aluminum pipe itself dry. water pump rebuilt last year and weep holes as well as under the pump seems dry. Where could this leak be coming from???

    Thanks very much for your help
    Dave
     
  2. tbakowsky

    tbakowsky Two Time F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    20,037
    The Cold North
    Full Name:
    Tom
    #2 tbakowsky, Aug 5, 2006
    You going to need a cooling system pressure tester to find the leak. You can buy the tool and any autoparts/tool store. Once you have this tool, finding the leak will be very easy.

    Buy the location you are describing, it sounds like your leak is comming from where the aluminum pipe from the t-stat housing joins together with a rubber hose down near the alternator. Also chek to be sure the pipe is not in contact with the alternator pully which will wear a hole in the pipe.
     
  3. dhs-9

    dhs-9 Formula Junior

    Feb 6, 2004
    292
    #3 dhs-9, Aug 5, 2006
    Found the leak it was the hose from the expansion tank to under the plenum
     
  4. smg2

    smg2 F1 World Champ
    Sponsor

    Apr 1, 2004
    16,458
    Dumpster Fire #31
    Full Name:
    SMG
    #4 smg2, Aug 5, 2006
    just a thought, i read here in a post that a 308 had the entire engine bay and engine painted white. seems odd but that would help spot any leak very fast. maybe one day when i'm bored and pull the motor again i might do that just for kicks. or not.
     
  5. JimboMondial

    JimboMondial Karting

    Dec 26, 2005
    73
    Portsmouth UK
    Full Name:
    Jim
    #5 JimboMondial, Aug 6, 2006
    dhs-9 glad you found the leak mine had a leak there found the spigot had corroded and had to be drilled out and replaced. must of been made of some rare metal because it cost £20.
     

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