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bubbling sound inside cooling tank container

Discussion in '308/328' started by Veleno, Feb 28, 2012.

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  1. Veleno

    Veleno Rookie

    Jan 10, 2010
    25
    #1 Veleno, Feb 28, 2012
    This past weekend I was working on the car and had it on/running but when I turned the car off (car was running less than 5 minutes) I could hear bubbling sounds coming from the engine bay, particularly inside the cooling tank container. Does anyone know why this is happening or what I can do to eliminate it (or is it normal)?

    Thanks for the help!
     
  2. MNExotics

    MNExotics F1 Rookie
    BANNED

    Dec 13, 2010
    2,631
    Good Thunder
    Full Name:
    Ben Gruenzner
    #2 MNExotics, Feb 28, 2012
    Bleed the air from the system. If the problem is still there then change the Rad cap.
     
  3. luckydynes

    luckydynes F1 Rookie

    Jan 25, 2004
    3,931
    CA and OR
    Full Name:
    pit bull
    #3 luckydynes, Feb 28, 2012
    Hopefully it's not a head gasket. I'd want to eliminate that possibility. If it's bubbling that soon after start up and it's the head gasket it is leaking pretty bad and could burn a groove in the cylinder head or sleeve if you keep running it.


    To check get a leakdown tester and pressurize the cylinders to 100 psi (some leakdown testers don't pressurize that high) and listen for bubbling ... hope it's something simple. If you don't care about reading actual leakdown numbers you can always just pressurize the cylinders with shop air and listen for bubbling ... need the right adapters to screw into the plug holes.

    good luck with it and again ... really hope that's not it.

    cheers
     
  4. GT4 Joe

    GT4 Joe Formula Junior

    Oct 19, 2010
    833
    Dana Point, Ca.
    Full Name:
    Joe Williams
    #4 GT4 Joe, Feb 28, 2012
    +1
    Try this first. Fully warm it up though, heater valves open also. If the expansion tank level gets too low, you can hear what you described.
     
  5. Veleno

    Veleno Rookie

    Jan 10, 2010
    25
    #5 Veleno, Mar 2, 2012
    Thanks for the suggestions guys. I'll try to bleed the system first. Does anyone have a link showing how to do this correctly?
     
  6. Dr Kananga

    Dr Kananga Formula 3

    Apr 20, 2011
    1,222
    Los Angeles, CA
    Full Name:
    Buonapart I. Gallia
    #6 Dr Kananga, Mar 2, 2012
  7. dinosar

    dinosar Rookie

    Nov 7, 2011
    9
    Oklahoma
    Full Name:
    Robert
    #7 dinosar, Mar 2, 2012
    My 308 has always made a few bubbling sounds right after engine-off. Never had a problem. I think this is in the catagory of odd but normal Ferrari sounds. Bleed system to be sure and enjoy life. Now if my 69 Moto Guzzi makes bubbling sounds.....
     

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