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Power steering noise?

Discussion in 'Mondial' started by JLF, Feb 27, 2020.

  1. JLF

    JLF Formula Junior

    Sep 8, 2009
    999
    Dallas
    Full Name:
    JERRY
    #1 JLF, Feb 27, 2020
    Last edited: Feb 27, 2020
    Hey guys a couple of days ago my power steering started making noise when I would turn the steering wheel left or right. The fluid in the reservoir looked like it was full of air ie. very foamy. I put more fluid in and today jacked front of car up and turned wheels lock to lock at least 20 times. There was no noise. Put the car back on the ground and there is noise when steering again. Any ideas what may be causing this? The noise sounds like low fluid or air in the lines but the fluid isn’t low.
    Isn’t the bleeding procedure to simply turn wheel lock to lock several times?
     
  2. Wade

    Wade Two Time F1 World Champ
    Rossa Subscribed Owner

    Mar 31, 2006
    28,920
    East Central, FL
    Full Name:
    Wade O.
    Section E - Steering is very brief. Nothing on bleeding either. What kind of fluid are you using?

    Image Unavailable, Please Login

    I've attached Section E, but you might need to rotate the document after opening it.
     

    Attached Files:

  3. thorn

    thorn Formula 3
    Silver Subscribed

    Aug 7, 2012
    2,374
    Tallahassee, FL
    The foaming is a symptom of air in the system. Look for a leak, either around the pump or the steering rack.
     
  4. JLF

    JLF Formula Junior

    Sep 8, 2009
    999
    Dallas
    Full Name:
    JERRY
    Thank you. Wade. Thorn no spots on the garage floor, shouldn’t I expect to see that?


    Sent from my iPad using FerrariChat.com mobile app
     
  5. thorn

    thorn Formula 3
    Silver Subscribed

    Aug 7, 2012
    2,374
    Tallahassee, FL
    Not necessarily. Look for wet "spots" (basically, a darker color) around the hoses/connections, reservoir, possible the boots on the rack. There could also be an inner leak in the rack. Sometimes it looks merely like dirty, oily debris on the pump.
     
  6. JLF

    JLF Formula Junior

    Sep 8, 2009
    999
    Dallas
    Full Name:
    JERRY
  7. mike32

    mike32 Formula 3

    May 13, 2016
    2,435
    Uk
    When you get air in hydraulics you will find the fluid level will rise, the entrained air increases the volumn in the system. If you can find the return line to the tank, disconnect and extend pipe into a container. Also blank off the return connection on the tank. With front wheels off the floor you can turn the wheels left to right and see if all the air comes out. Keep filling the tank. If the air comes back then you must have a leak somewhere
     
  8. JLF

    JLF Formula Junior

    Sep 8, 2009
    999
    Dallas
    Full Name:
    JERRY
  9. moysiuan

    moysiuan Formula 3
    Silver Subscribed

    Nov 1, 2005
    1,741
    Toronto, Canada
    Full Name:
    Andy
    Probably a loose hose fitting, with air being sucked in, a low pressure vacuum leak it would be called, look on the return side.
     
  10. JLF

    JLF Formula Junior

    Sep 8, 2009
    999
    Dallas
    Full Name:
    JERRY

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