Slight knock sound over bumps

[Jfoz]

I've recently had new Heavy duty arms, ball joints and drop links fitted. But I still get a knocking sound over certain bits are certain low speeds, less frequent since the new parts.

Do these need revisiting to tighten any nuts/bolts or is there something else that could be causing the sound.

Cheers

 

[Badjamin]

Is your van quite empty at the moment and do you have coil overs? When van is empty on coilovers some times a section of the springs that are normally touching are only almost touching when van empty and they can knock - generally at the rear.

A leaked of oil and empty front damper can cause knocking.

Exhaust mount perhaps?

Loose spare wheel bracket, side bars etc?

 

[DaveD]

I've recently had new Heavy duty arms, ball joints and drop links fitted. But I still get a knocking sound over certain bits are certain low speeds, less frequent since the new parts.

Do these need revisiting to tighten any nuts/bolts or is there something else that could be causing the sound.

Cheers

Not telling you what your problem is, but after I changed my drop links I had to retighten them a few weeks later to stop a slight knock.
If you've got the facilities to do it it's probably worth seeing if you can tighten them a bit more since they've bedded in. I try to do mine with weight on the hub, rather than with it hanging there, as that's more like how it is when you're driving.

 

[Jfoz]

Is your van quite empty at the moment and do you have coil overs? When van is empty on coilovers some times a section of the springs that are normally touching are only almost touching when van empty and they can knock - generally at the rear.

A leaked of oil and empty front damper can cause knocking.

Exhaust mount perhaps?

Loose spare wheel bracket, side bars etc?

Yeah van is empty currently, used as a work van. No coilovers just the factory springs and shocks.

I'll have look and the other 2 you mention

Could the engine mounts cause knocking sound?

 

[Jfoz]

Not telling you what your problem is, but after I changed my drop links I had to retighten them a few weeks later to stop a slight knock.
If you've got the facilities to do it it's probably worth seeing if you can tighten them a bit more since they've bedded in. I try to do mine with weight on the hub, rather than with it hanging there, as that's more like how it is when you're driving.

Yeah I'll look into this, taken it back within this month for my pads and discs, will have them tighten it up then

Cheers

 

[The Flying Scotsman]

Not telling you what your problem is, but after I changed my drop links I had to retighten them a few weeks later to stop a slight knock.
If you've got the facilities to do it it's probably worth seeing if you can tighten them a bit more since they've bedded in. I try to do mine with weight on the hub, rather than with it hanging there, as that's more like how it is when you're driving.

I had to do exactly this as well.
Definitely go and check how tight your drop links are before anything else.

 

[JumpShip]

Anti roll bar mounts ?