Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

timing chain rattle?

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by timc83, Jan 31, 2012.

  1. Wozza

    Wozza Well-Known Member

    Messages:
    1,888
    Likes Received:
    284
    Trophy Points:
    83
    Joined:
    Dec 13, 2011
    Location:
    Adelaide
    Members Ride:
    VR_GS commodore
    just my take on genral engine noises
    timing chain rattles all temps and go's quite as revs/load are put on,then makes a clatter as you come of the gas and it settles to idle....
    lifters tend to tap whenever but are the worst at first start for the day....
    balance bar tend rumble at idle and get drowned out as revs rise... they do tend to get worse as engine gets hotter buick more so than elmotech
    harmonic balancer and rod knock sound similar and just get louder with rpm
    little end, gudgeon pin, piston slap can ease with heat and load as parts expand and tighten up .......there is also flex plate rattle, water pump, alternator and power steering groans and bangs :)
     
    ephect, immortality and VS_Pete like this.
  2. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

    Messages:
    14,819
    Likes Received:
    2,849
    Trophy Points:
    113
    Joined:
    Apr 15, 2006
    Location:
    Sth Auck, NZ
    Members Ride:
    HSV VS Senator, VX s2 Calais S/C
    That's some great experience with engine parts failures.
     
  3. LatinDancer

    LatinDancer New Member

    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    1
    Joined:
    Mar 18, 2019
    Location:
    Brisbane
    Members Ride:
    VY Series 2, 3.8 Executive
    Firstly I'd like to say thankyou to everyone for their input to this problem....it's weighing heavily on my mind.
    Previously I had not noticed this noise being present during idling, and had only noticed it there during acceleration uphill, but I just sat at some lights and noticed a slight tinkle at the same frequency as the noise. So I'm going to use a stethoscope to track down the bugger.

    I did take off the serpentine belt and checked the water pump, pulleys and alternator...not them. So as it disappears with heat, it may be the little end & gudgeon pins.........groan ! Anyway.....time will tell, with a bit of help from a stethoscope.
     
  4. LatinDancer

    LatinDancer New Member

    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    1
    Joined:
    Mar 18, 2019
    Location:
    Brisbane
    Members Ride:
    VY Series 2, 3.8 Executive
    Wow....my noise sounded so much like pinging or a timing chain that I neglected to check the exhaust. But after banging on it in various places with a rubber mallet I find that there is a lot of rattling noise which is most likely the noise I was hearing.....which is why it disappeared when hot. But it's really hard to track down exactly where it is coming from.....there are heat shields everywhere. However there appear to be two small muffler-like thingies just downstream from the engine, which rattle more than elsewhere. Crikey, there are a lot of rattles....
     

Share This Page