Should I use putty on my leaking exhaust?

[RR76]

I put this exhaust on 5 months ago yet it's making a noise already which is getting worse each day. This is the second exhaust I've put on. The first one I changed had an obvious huge hole in the flexi section however this current one visually looks good however a soapy water test reveals that it's leaking at both the weld join, just below the flexi pipe, and the lower end of the flexi itself, the side nearest the weld join I just mentioned.

I'm still not 100% sure this is where the noise is coming from as I have little experience in this. But I'm just going with what the bubbles are telling me although again, visually it looks ok.

So I thought I could apply some gun gum putty to the weld and possibly even to the flexi pipe?

[finlo]

Putty on its own will just flake off, probably something like a knackered engine mount that's causing them to fail.

[RR76]

finlo said:

Putty on its own will just flake off, probably something like a knackered engine mount that's causing them to fail.

Ah, come to think of it there's only one rubber hanger as opposed to the two it should have, so this is likely causing too much vibration. It makes sense now.

[E-bmw]

You say "it is the second exhaust I have put on" did you actually put it on or have it put on?

I ask because if it is the latter take it back, it will be under guarantee.

[RR76]

E-bmw said:

You say "it is the second exhaust I have put on" did you actually put it on or have it put on?

I ask because if it is the latter take it back, it will be under guarantee.

I put it in. There are rubber hangers that should be on it, I only put one on so I'm guessing this is what's caused the damage

[E-bmw]

RR76 said:

E-bmw said:

You say "it is the second exhaust I have put on" did you actually put it on or have it put on?

I ask because if it is the latter take it back, it will be under guarantee.

I put it in. There are rubber hangers that should be on it, I only put one on so I'm guessing this is what's caused the damage

OK, so you have no warranty as all car parts will have a caveat in the warranty something like "if fitted by qualified mechanic".

That being the case, how competent are you?

I am not being nasty/funny here but if it were me I would be taking an angle grinder to it & fitting one of these as what you have is clearly sh!t quality to fail in such circumstances.

https://www.ebay.co.uk/itm/375190700849?itmmeta=01...

Yes, you haven't supported it correctly, but unless your engine is flopping all over the place it is unlikely to be putting much stress/movement on the flex & certainly won't be the cause of the failed weld.

ETA.
To get back to your original question NO, it won't do anything at all for the flexible joint as it needs to flex.

[StescoG66]

I have a similar issue - it’s the welds at the flanges that are failing - and I have found quick steel to work pretty well.....