Random,ish Back end clonk

[Paul Weller]

Hi All
I am getting a randomish mild clonk from the back end somewhere. Sounds more than trim or cabling but not major/ about to fall off. Any ideas on this?
Paul

 

[Grumps]

Could be the diff. Does it do it when pulling off or changing gear? Really prone, mine does it, nothing to worry over.

 

[Paul Weller]

Sometimes it links with that but also sometimes driving up the drive over the cufb out of gear.

 

[DavidM]

Could be something loose underneath - might be worth an inspection and a couple of shakes here and there - very technical.

 

[Ianmc]

Worn damper mounts are a well documented source of rear end noises.

 

[Jack Ratt]

Too much veg and plastic chairs ……..

 

[Paul Weller]

Worn damper mounts are a well documented source of rear end noises.

Sounds like that area but didn't think the mount could deteriate in my lifetime! I will take s look though.

 

[Grumps]

That's a good point Ian. Mine were completely shot and making a right racket.. Lee was god smacked when he drove mine. It had completely gone on one side and the knocking was vibrating down the side of the car.

 

[Sean d]

Only one answer for it

 

[Ianmc]

Sounds like that area but didn't think the mount could deteriate in my lifetime! I will take s look though.

According to my Z3s (fairly) comprehensive service history, both rear shock mounts were replaced in 2014 (55K miles) to "cure a creaking noise". Each mount cost £11.95 plus a top mount gasket at £1.00 - all plus VAT. One hours labour was charged bringing total to £100 all up.

I think 50/60K miles is generally normal replacement intervals with these cars.

 

[Grumps]

Only one answer for it
View attachment 84434

Haha certainly got rid of all my knocks and bangs.

 

[Paul Weller]

According to my Z3s (fairly) comprehensive service history, both rear shock mounts were replaced in 2014 (55K miles) to "cure a creaking noise". Each mount cost £11.95 plus a top mount gasket at £1.00 - all plus VAT. One hours labour was charged bringing total to £100 all up.

I think 50/60K miles is generally normal replacement intervals with these cars.

Well mine are original with 84k miles so Think I will change them anyway.

 

[Davyhoogy]

Each mount cost £11.95 plus a top mount gasket at £1.00 - all plus VAT. One hours labour was charged bringing total to £100 all up.

Wow that's alot. It's really not a big job at all to do so very easy to save yourself £100 If anyond is thinking of it. I bought the pair on eBay with gaskets for £15.

 

[D R Oldfield]

Mine has a random knock clunk what ever ,from the back end but only seems to happen with the soft top up it is perfectlly silent when the top is down was under the back last weekend shaking and looking for play but found nothing any ideas? The boot is empty can the sift top and frame make a knocking noise ?

 

[Sean d]

Mine has a random knock clunk what ever ,from the back end but only seems to happen with the soft top up it is perfectlly silent when the top is down was under the back last weekend shaking and looking for play but found nothing any ideas? The boot is empty can the sift top and frame make a knocking noise ?

If it only happens when the top is up then that would suggest it has something to do with the top