moaning sound from engine 1975 308 GT4 Dino | FerrariChat
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moaning sound from engine 1975 308 GT4 Dino

Discussion in '308/328' started by miahshodan, Aug 31, 2021.

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  1. miahshodan

    miahshodan Karting

    Feb 25, 2016
    94
    West Jordan, UT
    #1 miahshodan, Aug 31, 2021
    Anyone know what this sound is? Seems to go away when it is cold. I am thinking maybe distributor?
     
  2. jpl

    jpl Formula Junior

    Dec 4, 2003
    367
    Yulee Florida
    Full Name:
    JP Lavigne
    #2 jpl, Sep 2, 2021
    Never heard that before. Aside from that sound, it sounds just like mine. Does it change with rpm or load, in gear or not…if in gear only certain ones? Really not sure where to send you. I would take it my local guy and see if he has heard it before.
     
  3. miahshodan

    miahshodan Karting

    Feb 25, 2016
    94
    West Jordan, UT
    #3 miahshodan, Sep 3, 2021
    I hear it in gear or out. but I have only really been able to hear it well when idling. It seems to be much too slow to be based on engine rotation and when I have heard it while driving it seems to be about the same speed. Wish I had a local guy her in Salt Lake City familiar with the cars.
     
  4. absostone

    absostone F1 Veteran
    Silver Subscribed

    Jul 28, 2008
    9,994
    #4 absostone, Sep 3, 2021
    Water pump? Belt? Pulley?
     
  5. derekw

    derekw Formula 3

    Sep 7, 2010
    1,521
    London, UK
    Full Name:
    Derek W
    #5 derekw, Sep 11, 2021
    Get a piece of plastic tube (or a stethoscope) and listen to different parts of the engine. My guess is bearings in the water pump or alternator, or perhaps the oil pressure valve (try listening to the big plug on the front of the timing cover which houses the valve.) How is your oil level? Might be sucking air.
     
  6. absostone

    absostone F1 Veteran
    Silver Subscribed

    Jul 28, 2008
    9,994
    #6 absostone, Sep 11, 2021
    does that car have a air pump? or parts of the air injection leaking?
     
  7. miahshodan

    miahshodan Karting

    Feb 25, 2016
    94
    West Jordan, UT
    #7 miahshodan, Sep 23, 2021
    I removed the air pump. With it gone I don't think anything would be pressurized to leak would it?
     
  8. sltillim

    sltillim Formula 3
    Silver Subscribed

    Nov 22, 2009
    1,678
    San Diego
    #8 sltillim, Sep 24, 2021
    Get one of those cheap mechanics stethoscopes from harbor freight and isolate where it is coming from.
     
    robertcope likes this.
  9. miahshodan

    miahshodan Karting

    Feb 25, 2016
    94
    West Jordan, UT
    #9 miahshodan, Apr 13, 2022
    Changed the oil and it sent away, probably low oil.
     
  10. derekw

    derekw Formula 3

    Sep 7, 2010
    1,521
    London, UK
    Full Name:
    Derek W
    #10 derekw, Apr 15, 2022
    Do I get a gold star? glad it was something easy
     
  11. miahshodan

    miahshodan Karting

    Feb 25, 2016
    94
    West Jordan, UT
    #11 miahshodan, Apr 15, 2022
    dinogt4guy likes this.

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