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Thread: 2.7, strange engine noise, please assist.

  1. 27th December 2015, 08:07 AM #1
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    2.7, strange engine noise, please assist.

    Hi all, I have noticed a strange noise which I think is coming from the front of the motor on my MY09 D3. I'm worried about the "clonk" sound.

    Can I please ask that you watch/listen to the video and try to help me diagnose it so that I have an idea what it is? Car is due for timing belts etc ASAP also.

    [ame]https://youtu.be/rpYtDx22_iE[/ame]

    Yes, I know the engine bay needs cleaning, too.
    Regards, Will

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  2. 27th December 2015, 08:50 AM #2
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    Gday Will

    I can't really hear the noise. However, with your km maybe a bearing eg bottom end bearing, turbo bearing or alternator bearing. The noise can sometimes be identified but putting a long screw driver on the suspect component and your ear to the handle.
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  3. 28th December 2015, 08:28 AM #3
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    Have added another video, this time with the shroud removed. The sound I'm worried about is more prominent this time, hope you guys can hear it...

    [ame]https://youtu.be/eLYLA0GOzlc[/ame]
    Regards, Will

    Stornoway Grey '09 D3 TDV6 SE, 2015 TERRITORY Engine at 348k
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  4. 28th December 2015, 01:59 PM #4
    Graeme
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    You could remove the serpentine belt and run the engine for a few seconds to determine if the noise still occurs.

    I assume its the rattly noise that concerns you.
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  5. 28th December 2015, 04:48 PM #5
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    I while ago my engine got a bit rattly - turned out the serpentine belt tensioner had failed, and it wasn't the bearing that failed either. The tensioner split in two around its tensioner spring, very nearly lost the belt because of it
    Shane
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  6. 28th December 2015, 06:18 PM #6
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    Quote Originally Posted by Graeme View Post
    You could remove the serpentine belt and run the engine for a few seconds to determine if the noise still occurs.

    I assume its the rattly noise that concerns you.
    Yeah that's what I'm going to do thanks Graeme. Yes it's the clonking rattle that I'm concerned about. It's gotten worse over the last couple of weeks.
    Regards, Will

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  7. 28th December 2015, 06:19 PM #7
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    Quote Originally Posted by shanegtr View Post
    I while ago my engine got a bit rattly - turned out the serpentine belt tensioner had failed, and it wasn't the bearing that failed either. The tensioner split in two around its tensioner spring, very nearly lost the belt because of it
    Thanks Shane, interesting you should mention the tensioner. It seems to me that the lower tensioner is on a significant angle, tilting back towards the block. So much so that the belt seems to be twisted out of straight onto an angle as it goes over the tensioner. Was yours like that?
    Regards, Will

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  8. 29th December 2015, 02:15 PM #8
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    exactly like that - didn't think of taking a photo at the time either
    Shane
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  9. 4th January 2016, 10:00 AM #9
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    Well, it's just gotten a whole lot worse. Started ticking on the freeway near Benalla on Friday, pulled over asap. Had to get flat-bedded home, tensioner totally destroyed. However, with tensioner and serpentine belt removed, it's making a terrible noise, and won't run.

    [ame]https://youtu.be/2Hz9FiT42jA[/ame]
    Regards, Will

    Stornoway Grey '09 D3 TDV6 SE, 2015 TERRITORY Engine at 348k
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  10. 4th January 2016, 12:48 PM #10
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    Will, I might be mistaken but, should you be trying to start the engine without the belt in place? I thought that would be akin to having the webbing on the oil pump fail with fatal damage to the engine.
    Cheers,

    Sean

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