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Cold start rattle on LS3 - piston slap :) Engine replaced

Discussion in 'VF Holden Commodore (2013 - 2017)' started by Ron Burgundy, Oct 11, 2017.

  1. Pablito

    Pablito Active Member

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    "We can't hear anything"
    Or
    " That sound is normal"
     
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  2. Mayuri Krab

    Mayuri Krab Member

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    Pretty much this... lol

    Service adviser said they spent 3.5 hours on the car and couldn't find anything wrong with it, engine sounded normal with just normal drivetraij noise and exhaust.

    Mentioned one of the bolts underneath was slightly loose and tightened that up...

    But the noise seem to have died down mostly by itself somehow... maybe its because I stopped caring too much.
     
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  3. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Loose bolt for what? It may have contributed to strange noises.

    Years ago we had a strange rattle in the back of the car, turns out whom ever had fitted the brake pads hadn't put the little clips in properly and once the pads wore down a bit they started rattling. The tell tale was the noise went away when you applied the brakes. All 4 rear pads where the same so you have to wonder how many other cars out there had weird rattling noises in the rear cause whom ever fitted em didn't leave those clips like that by accident.
     
  4. Skylarking

    Skylarking Well-Known Member

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    First time I’ve heard a professional describe a loose bolt as nothing wrong o_O

    If this is normal, I’m surprised wheels aren’t falling off cars left right and center since checking underbody bolts is a dealer service item :eek:

    I’d probably be looking for someone else to service the car ;)
     
  5. Paulie81

    Paulie81 Active Member

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    Here is a recent video I recorded on my iPhone of the cold startup noise on my SS. You can really hear it when you get under the car. As others have posted it goes away after a few mins of driving and the engine reaches operating temperature. Still undecided whether to live with it or keep pushing Holden. I'm just worried they will do more harm than good.

     
  6. Anthony121

    Anthony121 Well-Known Member

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    I would be looking how much rattle it makes under load. Sounds like mine and it goes away after it is warm. No guarantee it will be gone if they fix it. My independent told me to leave it alone and showed me his LS3 in his HSV.
     
  7. Paulie81

    Paulie81 Active Member

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    So his HSV did the same?
     
  8. Ron Burgundy

    Ron Burgundy Well-Known Member

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    Keep pushing bruz
     
  9. Anthony121

    Anthony121 Well-Known Member

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    Yes but once warm it was ok.
     
  10. Trevor loves holden.

    Trevor loves holden. Well-Known Member

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    Good old piston slap, lol, got to love Holden.
     

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