Jump to content

Rear knocking sound

Vijay2018
in Skoda Octavia Mk1 (1996-2004)

Featured Replies

Posted

Hi all,

Searched high and low to find a knocking noise I have going over bumps. Tightened up the boot bumps and latch. Checked shocks and springs, exhaust, removed everything out of the boot but still it persists when ever I go over a bump/pothole. I jacked the car up thinking maybe the wheel bearings and all I found with them is it feels like very slight rotational play (nothing at 6 & 12 or 3 & 9 movement and no noises when spinning the wheel). It's got this slight rotational play on both sides and I wonder if this is normal and the possible knocking noise????

Cheers

Vijay

Edited by Vijay2018

Sounds more like a failed bush or ball joint or more likely a drop link. Just did my front drop links on my MK2. They looked and felt ok but only when they were removed you could notice a fair bit of play. Doesnt take much play to get a clunk expecially with the condition of roads.

Alasdair

    •
    • Like 2
    • Author

    coming from the back end mate ;)

    2 hours ago, Vijay2018 said:

    removed everything out of the boot but still it persists when ever I go over a bump/pothole.

    Does the car have the false floor? (folding chipboard panels covering the spare wheel well)

    1 hour ago, Vijay2018 said:
    1 hour ago, Vijay2018 said:

    coming from the back end mate ;)

    Sorry meant the links to the anti roll bar at rear.

    • Author
    35 minutes ago, Paws4Thot said:

    Does the car have the false floor? (folding chipboard panels covering the spare wheel well)

    it does but it still makes the noise when there's stuff on that false floor and the second/boot floor

    • Author
    22 minutes ago, Alasdair1 said:
      1 hour ago, Vijay2018 said:

    coming from the back end mate ;)

    I'll look again cos I didn't see the anti roll bar. Stupid question but is there still one on the 1u5 estate?

    2 hours ago, Vijay2018 said:

    it does but it still makes the noise when there's stuff on that false floor and the second/boot floor

    That was just a thought, and remember I have no access to your car.

    There is a RARB, but it's built into the rear torsion beam, so not visible.

    Rear subframe/torsion beam mounting bushes are more plausible.

    • Author
    4 minutes ago, Paws4Thot said:

    That was just a thought, and remember I have no access to your car.

    There is a RARB, but it's built into the rear torsion beam, so not visible.

    Rear subframe/torsion beam mounting bushes are more plausible.

    do you mean there's no access to the subframe/torsion beam bushes?

    1 minute ago, Vijay2018 said:

    do you mean there's no access to the subframe/torsion beam bushes?

    No, I mean I'm about 420 miles from your car!

    clunks and thunks tend to be bushes. as alisdair said , they might look okay, until they come out.

    • Author

    what am I looking at, 2 bushes a side? How bad of a job is it?

    Just realised its a MK1. On the MK2 there are rear suspension arms with upper and lower bushes. They also have concentric bolts to adjust the wheel angle at top. Not sure if the MK1 is similar. If they do go you normally notice uneven tyre wear at rear and can cause clunks etc.

    Alasdair

    • Author

    from what I can find, there is only a bush for the axle beam and another on the ARB

    •
    • Like 1

    On 19th June,

    2 hours ago, Vijay2018 said:

    With regards to the ARB bushes, where are these located as I could not see them at all.

    As I said back on June 11th...

    On 11/06/2025 at 21:28, Paws4Thot said:

    There is a RARB, but it's built into the rear torsion beam, so not visible.

    • Author
    4 minutes ago, Paws4Thot said:

    On 19th June,

    As I said back on June 11th...

    Ah sorry, my bad. Are the anti roll bar bushes something that can easily be changed?

    3 minutes ago, Vijay2018 said:

    Ah sorry, my bad. Are the anti roll bar bushes something that can easily be changed?

    I'm not sure. I know how a torsion beam works but they're so reliable I've never had to work on one.

    • Author

    I'll start with the main bushes then and hope it's nothing to do with the ARB ones lol Just would have been good to do the lot while I'm under there

    • 2 weeks later...

    Top mounts on the rear shockers

    • Author
    44 minutes ago, Paul thornton said:

    Top mounts on the rear shockers

    Would I be able to feel movement in them from the arch by trying to move tt by hand?

    Bought the lower bushes to do on Wednesday

    Create an account or sign in to comment

    Go to topic listing

    Recently Browsing 0

    • No registered users viewing this page.

    Important Information

    Welcome to BRISKODA. Please note the following important links Terms of Use. We have a comprehensive Privacy Policy. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.