Technical Center exhaust silencer knocking on chassis

[W Bakker]

Hi all,

I have just figured out what causes the loud knocking sound coming from my car going over steep speed bumps and cobblestone streets. The middle silencer seems to be off-centred, causing it to hit the right side of the tunnel it's supposed to fit inside. The silencer was replaced last year at roughly the same time the knocking started, garage that carried out the work is currently closed and won't be back until September. I'd like to fix it myself before then because it's driving me nuts! Does anybody know if it's possible to adjust the silencer, or does it need to be replaced for a better fitting example?

 

[The Panda Nut]

You are right its not on straight. Any Exhaust Centre or decent garage should be able to adjust itin half an hour os so. I wonder why its off though. The front end of the centre section needs to be checked as well. and also the front pipe bracket to the gerbox needs to be checked to make sure its all properly fixed and in line.

It can be fixed and shouldn't need replacing it looks in great condition still.

 

[Jockstrap]

I've the same vehicle.

Check the rubber hangers at each side of the back box. If the outer is missing or shot is could be pulling the exhaust inward.

Here's a photo of mine. Shows the centre hanger near vertical.

 

[Jockstrap]

Had another look at the OP photo. The hanger hook is shiny. Looks like the rubber has shifted.