Exhaust Problems

mrbennybennett · Post by **mrbennybennett** » Wed Feb 08, 2006 10:26 am

Excuse my lack of knowledge but i really know f*** all about technical stuff!

Had my timing belt done yesterday on my S1 at Manor Garage in West Linton - when this is done do they have to remove or play with the exhaust??

Its just on the drive back to Edinburgh the exhaust seemed to be blowing at bit and sounded crap - any thoughts?

The guy at the garage did say there may be a problem with the lambada (spelling?) sensor - would this cause it?

As I said - i know sweet FA about mechanics!!

Cheers

Gareth · Post by **Gareth** » Wed Feb 08, 2006 10:43 am

Cam belt is done from the engine bay but other than that I don't know....

jj · Post by jj » Wed Feb 08, 2006 11:21 am

I am not technical enuogh to say yes or no, but I do have a standard S1 exhaust you or anyone is welcome to have if needed.

Post by **Shug** » Wed Feb 08, 2006 11:30 am

If they've taken off the RH engine mount (as they'd have to on a standard car, to change the belt) it could move about and the flexi section on the zorst downpipe may have gone, if it was weak in the first place....

Leave the engine running and get on the floor behind it - you'll see under the engine that the tray has 3 holes - 2 triangular (vents) and one oblong (which clears the flexi section) You'll see the flexi (braided bit) sitting there.

Get your hand about the flexi and see if you can feel any gasses blowing out (try not to touch, as it'll probably be hot) It's not conclusive, as it my be blown at the top, but it's more usual to go underneath. Oh - goes without saying, if it's frayed to f**k, it's probably knackered.

The lambda thing wouldn't be the issue, unless it's actually fallen out!! (it's a wee sensor plumbed into a threaded hole in the manifold) However, worth finding out what he actually meant, as if it's knackered the engine will be running miles rich and not doing it any good. It won't spontaneously combust, but you'll contaminate oil, knacker the cat (if you have one) and it'll be as rough as old boots.

mrbennybennett · Post by **mrbennybennett** » Wed Feb 08, 2006 11:48 am

Shug wrote:If they've taken off the RH engine mount (as they'd have to on a standard car, to change the belt) it could move about and the flexi section on the zorst downpipe may have gone, if it was weak in the first place....

Leave the engine running and get on the floor behind it - you'll see under the engine that the tray has 3 holes - 2 triangular (vents) and one oblong (which clears the flexi section) You'll see the flexi (braided bit) sitting there.

Get your hand about the flexi and see if you can feel any gasses blowing out (try not to touch, as it'll probably be hot) It's not conclusive, as it my be blown at the top, but it's more usual to go underneath. Oh - goes without saying, if it's frayed to f**k, it's probably knackered.

The lambda thing wouldn't be the issue, unless it's actually fallen out!! (it's a wee sensor plumbed into a threaded hole in the manifold) However, worth finding out what he actually meant, as if it's knackered the engine will be running miles rich and not doing it any good. It won't spontaneously combust, but you'll contaminate oil, knacker the cat (if you have one) and it'll be as rough as old boots.

shug

Just had new new downpipe and cat from Geary fitted by Brunty at the end of November to get throught the MOT so think they should be fine - suppose ill just have to pop back down to west linton and get them to have a look at it again

Post by **Shug** » Wed Feb 08, 2006 11:59 am

In that case, could be a rusty weld in the manifold or something in the downpipe/cat/backbox install that's gone awry. I suppose there is also a chance that the lambda mounting could be leaking (find out if that's what they are referring to)

Short answer is that there's a good chance the engine will have moved when they were changing the belt, so yeah - the zorst will have been disturbed.

Oh, and if it's a new cat - find out about the Lambda asap - you don't want to be flooding an expensive thing like that with unburnt petrol. There is also a chance of cat fires, if it's running rich.

mrbennybennett · Post by **mrbennybennett** » Wed Feb 08, 2006 2:33 pm

Shug wrote:In that case, could be a rusty weld in the manifold or something in the downpipe/cat/backbox install that's gone awry. I suppose there is also a chance that the lambda mounting could be leaking (find out if that's what they are referring to)

Short answer is that there's a good chance the engine will have moved when they were changing the belt, so yeah - the zorst will have been disturbed.

Oh, and if it's a new cat - find out about the Lambda asap - you don't want to be flooding an expensive thing like that with unburnt petrol. There is also a chance of cat fires, if it's running rich.

Cheers Shug

Ive popped the car into my local garage who i trust to give it a quick check - hopefully nothing too sinister but we will see!

Rich H · Post by **Rich H** » Wed Feb 08, 2006 6:44 pm

You could of course *ahem* loose the cat....