Rear end thump.

[john & Jake the dog]

Hi, puma passed the test today after a little work.
Replaced all the shock absorbers with Monroes though it only needed the rears.
The fronts behave very well over speed humps but the back end has a thump when coming off a speed hump.
Is this normal behavior due to the lightness of the rear?

 

[Dwighet]

Check spare tyre is bolted up nice and tight and its not moving around and check rear muffler box rubber hangers..

 

[john & Jake the dog]

Hi, thanks for the suggestions.
I replaced the entire exhaust before the test and it seemed tight but I'll check.
I also had the spare's tray off to paint so I'll check that as well.

 

[748]

I wouldn't say that's normal behavior.
Did you replace the suspension top mounts?
Also it could be the rear beam bushes, they don't always get picked up on a MOT test.
Paul

 

[john & Jake the dog]

I wouldn't say that's normal behavior.
Did you replace the suspension top mounts?
Also it could be the rear beam bushes, they don't always get picked up on a MOT test.
Paul

Just tightened the spare tray a little and drove across a speed hump.
Most of the thump has gone just a small thump which could be put down to stiffness of the new shocks.
Not sure though as this car is new to me.

I didn't replace the top mounts on the rear, did the fronts though.
How can I check the rear beam bushes?

 

[TGPlayer1]

Is there a gap between the top mounts and body? I had to put an 8mm thick rubber ring in mine because of the gap.

 

[tuonokid]

Hi Tom
Yeah there's a gap on the rears as well as the fronts.
Barry

 

[TGPlayer1]

I know. Hence the rubber.

 

[Stevecvo]

I thought it was normal to have that gap

 

[YOG]

As "Stevecvo" said, it's normal to have a gap at both front and rear, just not too big a gap.