Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: m.ian on 27 November 2014, 10:36:37

Title: Knocking noise at rear
Post by: m.ian on 27 November 2014, 10:36:37

As per title have knocking noise when going over uneven road surface from the back of the estate, near side I think.
Have checked exhaust and all seems well with that, so what could it be?

Title: Re: Knocking noise at rear
Post by: chrisgixer on 27 November 2014, 10:44:22

Heat shields?

Broken spring?

Knackered (reeeeeeally knackered) donut bushes ?

 Top shock mount? Could remove the cover and get an assistant to check the top mount while driving?

Most knocks at the rear are or seem to be exhaust related ime...?

Title: Re: Knocking noise at rear
Post by: 05omegav6 on 27 November 2014, 10:55:45

The rear most exhaust hangers have a nasty habit of working loose which in turn allows the back box to flap around...

There's also a potential contract point where the exhaust passes the wheel tub/chassis rail seam iirc :y

Also, if the shock mounts are loose, you only need to lift the carpet in the boot to check :y there are two small steel plates held down by four screws. If the top mount has failed these will have had the shit kicked out of them... expect dents or holes if this s the case...

Title: Re: Knocking noise at rear
Post by: m.ian on 27 November 2014, 18:20:16

Thanks for the input will look tomorrow and let you know

Title: Re: Knocking noise at rear
Post by: SteveAvfc. on 28 November 2014, 21:47:43

Had knocks in my last mig on uneven roads after lots of searching was the shocks worth a check and easy enough to replace.

Title: Re: Knocking noise at rear
Post by: m.ian on 30 November 2014, 17:24:57

Have checked exhaust under car and given it a good shake but found nothing :(
Checked top of shocks under plate and look OK so......
a. how do I check if it is the shocks
b. how do I check the donut bushes?

Title: Re: Knocking noise at rear
Post by: tigers_gonads on 30 November 2014, 18:01:37

I'm on my 3rd estate in a row and everyone has broke a rear spring  :(
Jack the back end up and sit it on 2 axel stands.
Get a bar in there or get someone to stand on the wheel to force it down a little.
If you get underneath, you can get a good look at the spring  :y
Favourite place is about 6 inches round from the bottom where the pigtail meets the main part of the coil  ;)
Don't put your fingers in there because it will bite  :-X

Title: Re: Knocking noise at rear
Post by: m.ian on 20 December 2014, 12:08:53

Thanks for all the suggestions and yet after checking over all the above found that the S/L adjustment arm had stuck and the car was lower than normal !
Freed it then sprayed it all with white spray grease and now all is well  :y :y :y :y

Title: Re: Knocking noise at rear
Post by: 4x4 on 20 December 2014, 16:47:16

Been carrying to many dead bodies in the back again  ;D

Title: Re: Knocking noise at rear
Post by: m.ian on 21 December 2014, 13:01:59

Damn ....I thought  got away with that  ;)

Title: Re: Knocking noise at rear
Post by: X30XE on 21 December 2014, 15:49:05

Knocking noise on the back of my estate is coming from the reflectors rattling in the back bumper. Another one for the "one day" list  :P

Title: Re: Knocking noise at rear
Post by: dad1uk on 26 December 2014, 10:08:51

Quote from: m.ian on 21 December 2014, 13:01:59

Damn ....I thought  got away with that  ;)

No secrets on this site Ian......
Hope you are still in married bliss, hope you had a great Christmas and best wishes for 2015

Title: Re: Knocking noise at rear
Post by: m.ian on 26 December 2014, 10:16:02

Thanks Simon, yes still enjoying "marriage bliss" and all the best for you and your family too for 2015 :)
 

Title: Re: Knocking noise at rear
Post by: omega3000 on 26 December 2014, 15:37:23

Quote from: X30XE on 21 December 2014, 15:49:05

Knocking noise on the back of my estate is coming from the reflectors rattling in the back bumper. Another one for the "one day" list  :P

New one there then  :o