Shimsteriom

Master Procrastinator

• Sep 17, 2017

• #1

So, after replacing the bushes on the front and rear radius arms, arb, and the watts linkage, I was hoping that the annoying knocking would go away, but it hasn't!
I've been underneath and given stuff a kick and push, but there's nothing obviously loose, broken or worn, so has anyone else has a similar issue? It's a metal on metal sound rather than a thump or thud, and more frustratingly, it's really hard to determine whether it's the front, back or middle of the car, but if I had to pick any of them, I'd go for the middle / rear.

 

C

Colthebrummie

Well-Known Member

• Sep 18, 2017

• #2

It's not the exhaust knocking on something is it?

Col

 

jamesmartin

Well-Known Member

• Sep 18, 2017

• #3

Shimsteriom said:

So, after replacing the bushes on the front and rear radius arms, arb, and the watts linkage, I was hoping that the annoying knocking would go away, but it hasn't!
I've been underneath and given stuff a kick and push, but there's nothing obviously loose, broken or worn, so has anyone else has a similar issue? It's a metal on metal sound rather than a thump or thud, and more frustratingly, it's really hard to determine whether it's the front, back or middle of the car, but if I had to pick any of them, I'd go for the middle / rear.

Click to expand...

get someone to rock car vigorously whilst you check , a hand on each part in turn helps

 

Shimsteriom

Master Procrastinator

• Sep 18, 2017

• #4

Colthebrummie said:

It's not the exhaust knocking on something is it?

Col

Click to expand...

Nah, that was one of the first things I kicked

 

davidsmith1307

Well-Known Member

• Sep 18, 2017

• #5

Have you tried going around underneath and giving everything a good whack. You can often rule things in or out as they won't sound like the knock you hear.

 

O

ozzyboydeano

Well-Known Member

• Sep 18, 2017

• #6

shockie bush ? sway bar links ? exhaust hitting due to bad engine mounts or an exhaust mount
some times you need the weight off to test curtain components

 

MJI

Well-Known Member

• Sep 18, 2017

• #7

How do you trigger it?

 

Shimsteriom

Master Procrastinator

• Sep 18, 2017

• #8

MJI said:

How do you trigger it?

Click to expand...

Seems to be when hitting speedbumps or potholes too quickly. Even 15-20mph can cause the knocking.

 

Shimsteriom

Master Procrastinator

• Sep 18, 2017

• #9

ozzyboydeano said:

shockie bush ? sway bar links ? exhaust hitting due to bad engine mounts or an exhaust mount
some times you need the weight off to test curtain components

Click to expand...

All the new shocks had new bushes fitted when they were replaced, however, the arb droplinks have never been renewed during my ownership, so I'm thinking of getting them replaced anyway.

 

MJI

Well-Known Member

• Sep 18, 2017

• #10

Shimsteriom said:

Seems to be when hitting speedbumps or potholes too quickly.

Click to expand...

Not cornering?

If it was as well, drop links.

When speedbump hit, was it front or back?

 

Shimsteriom

Master Procrastinator

• Sep 18, 2017

• #11

MJI said:

Not cornering?

If it was as well, drop links.

When speedbump hit, was it front or back?

Click to expand...

No, not when cornering.. even at 50ish, there's no kncoking. It just seems to be when something is hit, or the wheels drop in to a hole. I think it's coming from the back, but it's quite difficult to tell.

 

doodle bug

Well-Known Member

• Sep 18, 2017

• #12

Might be a seagull called Steven jammed underneath ?

 

M

MUDCANIC

Member

• Sep 20, 2017

• #13

Try you're rear antiroll bar ace drop link drivers side.grab hold of main bar.up and down.hard.mine wentknocking more when driving slow.

 

Shimsteriom

Master Procrastinator

• Jan 2, 2018

• #14

So, finally replaced the ARB droplinks, front and rear, and the knocking has stopped!