exhaust blowing
Fred
I have a diesel 2004 Citroen C3, 79000 miles. Perhaps it's my
imagination but I think the exhaust seems a bit noisier. Is it likely
that the exhaust could be leaking? Is 7 years/79k miles about the life
of an exhaust?
I have not noticed any affect on performance. It still seems to
accelerate fine and I haven't been paying close attention to fuel
bills so I don't know whether economy has been affected.
Are there any other signs or symptoms to look for?
I have heard people crawling under the car looking for leaks. Isn't
that a little risky? Or is it only if you inhale them in confined
spaces?
With it being a diesel, is it likely any leak would be visible because
of soot?
I'm hoping to change the car soon, so wondered about using a bandage
or something similar rather than replace any section of pipe.
TIA
shazzbat
"Fred" <fr...@no-email.here.invalid> wrote in message
news:r5rl37hqklclrblpa...@4ax.com...
Get a lump of rag in your hand and put it over the end of the pipe with the
engine running. What happens? If it's blowing the blow will become more
pronounced.
Steve
Mr Pounder
"shazzbat" <shaz...@spamlessness.fsnet.co.uk> wrote in message
news:j1g9ao$eg5$1...@news.albasani.net...
Yes.
However, gum gum or whatever it is called these days never worked for me.
>
>
Chris Whelan
[...]
> However, gum gum or whatever it is called these days never worked for
> me.
Really? Most exhaust fitters use exhaust paste.
Chris
--
Remove prejudice to reply.
Mr Pounder
"Chris Whelan" <cawh...@prejudicentlworld.com> wrote in message
news:j1hn63$6f3$2...@dont-email.me...
It was a long time ago when I last tried to repair a hole in an exhaust.
Dave Plowman (News)
Fred <fr...@no-email.here.invalid> wrote:
> I have a diesel 2004 Citroen C3, 79000 miles. Perhaps it's my
> imagination but I think the exhaust seems a bit noisier. Is it likely
> that the exhaust could be leaking? Is 7 years/79k miles about the life
> of an exhaust?
The actual silencer part can become less efficient with age.
--
*A fool and his money can throw one hell of a party.
Dave Plowman da...@davenoise.co.uk London SW
To e-mail, change noise into sound.
Fred
<da...@davenoise.co.uk> wrote:
>The actual silencer part can become less efficient with age.
Hi,
I reversed onto a pair of car ramps and had a look underneath. I don't
know the technical terms but there is a "metal strap" holding up the
back box and this is all rusted. Is this because the strap and exhaust
are two different metals in contact or am I making that up? It looks
as though it has rusted through.
I tried the rag up the exhaust but it didn't seem to do anything.
There is a straight section of exhaust from the engine and then near
the back it bends through a right angle. I think this is to divert
past the fuel tank. On the bend the top of the exhaust is quite
rusted. At what point does this become a concern?
It is the original exhaust. I am sure the back box needs changing now
but I'm wondering whether the middle section will need changing
because of the rusty bend or whether than could last several more
months.
Thanks.
Rob
I don't know this car or exhaust.
Generally nowdays the exhausts are made from martensitic stainless steel
this contains iron this will attribute to the pipes having rusting
appearance. The brackets are made from mild steel which will rust far more.
So the appearance of surface rust may not indicate the pipe has to be
replaced.
The rag should have chocked the car, and if it didn't, will allow the
exhaust gas to escape, from the leaking hole or crack ( does on a petrol
car.)
Exhausts rust out or wear thin on the inside more so at the rear of the
car where there is not so much heat to dry them out. (petrol)
Not sure what happens to a diesel maybe they don't burn dry heat??. if
anyone is familiar like to know.
Chris Whelan
[...]
> Not sure what happens to a diesel maybe they don't burn dry heat??. if
> anyone is familiar like to know.
Diesels, old ones at least, tend to suffer less from internal exhaust
corrosion than a petrol as the emissions seem less acidic, but rather
more from bracket failure due to vibration.
If I was looking at changing a car in the next few months, I wouldn't
consider replacing an exhaust unless it failed completely.
James
>Get a lump of rag in your hand and put it over the end of the pipe with the
>engine running. What happens? If it's blowing the blow will become more
>pronounced.
>
>Steve
FWIW:
An exhaust fitter told menever to do this - after I'd told him I had.
Reason - it will make any very minor leak much more pronounced, and
replacement almost certainly required.
Also on petrol cars, minor exhaust leaks can lead to high lamba (too
much oxygen in exhaust) in MOT emission test = fail.
Grimly Curmudgeon
drugs began to take hold. I remember James <gro...@google.com> saying
something like:
>FWIW:
>An exhaust fitter told menever to do this - after I'd told him I had.
>Reason - it will make any very minor leak much more pronounced, and
>replacement almost certainly required.
If the pipe's in such a bad state that bits blow off it, it's due for
replacement anyway.
If the pipe's in a decent condition, temporarily blocking the exit
highlights the leaky joints, which can be sorted.