Awful buzzing from exhaust

Jennie · Unread post by **Jennie** » 27 Sep 2009, 23:53

Hiya all, I think my cat has gone. Originally it was thought that the back box was catching the bumper but after a shuffle it was still making the horrible vibrating noise at about 2000 revs, it sounds like the cat

Preferably i would like it replaced by Fri for ace cafe, but if not im sure another few days wont hurt? Has anyone got anywhere they would recommend price-wise? A quick look on ebay says about £90

Thanks guys

Jennie

KP · Unread post by KP » 28 Sep 2009, 08:36

£90 isn't bad for a cat section. Best to get the old one off and wiegh it in as well as they fetch a few quid for the metals inside them

Having had a quick look under mine the other day i'd imagine it a bit of a pig to do the job at the turbo end but plenty of daily soaking with WD40 should help it when the time comes along

Jennie · Unread post by **Jennie** » 28 Sep 2009, 09:48

Thanks for the wd40 tip, i will make sure that gets done. The section from the cat to the back box is only a year old so that end shouldnt be a problem

Im going to have to turn my music up for the 500 mile journey this weekend

Unread post by **CitroJim** » 28 Sep 2009, 10:06

Jennie,

Check the front of the cat is not catching on the subframe. It quite often the problem, especially if the mid-section has been replaced and not absolutely correctly aligned. There's not a lot of clearance.

If this is a problem, you'll see fret marks on the cat body where it's been in contact.

Jennie · Unread post by **Jennie** » 28 Sep 2009, 11:33

A glimmer of hope! Im hoping it is as simple as that but not holding out too much hope as it has been checked whilst i revved it over a pit, but its worth a look, thanks

Quackers · Unread post by **Quackers** » 28 Sep 2009, 16:00

I just got this annoying rattle at just over 2000rpm fixed, it was the top engine mount, maybe yours is the same annoying rattle.

Brigsygtt · Unread post by **Brigsygtt** » 29 Sep 2009, 13:15

Bafflepipe might be rattling in the centre box/rear box. Seems to happen on all non genuine exhausts after a few miles.

If the cat is gone it will make a tinny noise, smash the guts out of it.