Exaust fumes getting into car
Moderator: RichardW
Exaust fumes getting into car
I tried hijacking someone else's thread with this but received no response, so thought I'd try in its own thread!!
I've been meaning to post this query for some time and it kinda fits in here I guess.
Ever since I have had the car (18 months now) I get fumes in the car if the window or sunroof are open. Doesn't matter which window. Its only in certain conditions i.e. running at 30mph-ish or less. Its really bloody annoying. If I have the sunroof and a window open it is less noticeable, but still there.
Is this common for a Mk1 Xant or is there a particular problem with mine?
I've been meaning to post this query for some time and it kinda fits in here I guess.
Ever since I have had the car (18 months now) I get fumes in the car if the window or sunroof are open. Doesn't matter which window. Its only in certain conditions i.e. running at 30mph-ish or less. Its really bloody annoying. If I have the sunroof and a window open it is less noticeable, but still there.
Is this common for a Mk1 Xant or is there a particular problem with mine?
95 Xantia 1.9td SX
- CitroJim
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My first thought would be a leaking "brillo pad", the exhaust to manifold joint.
Have a look at the joint and see if you can see fresh soot around it. Another clue to the failure of this joint is being able to smell exhaust fumes under the bonnet.
Another favourite spot, if yours has a cat, is the rear cat to mid-section pipe joint.
Have a look at the joint and see if you can see fresh soot around it. Another clue to the failure of this joint is being able to smell exhaust fumes under the bonnet.
Another favourite spot, if yours has a cat, is the rear cat to mid-section pipe joint.
Jim
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
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Is there a gommit or hole in the boot section??
Tow bar fitted? If so there be a hole for the electrics to run through into the car.. the hole for this? Check its all sealed properly
Paul
Tow bar fitted? If so there be a hole for the electrics to run through into the car.. the hole for this? Check its all sealed properly
Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
Thanks for the tips guys. Are leaky exhausts not usually picked up at MOTs? As you can probably tell me and mechanicals are not the best of bed-fellows!
Paul, If there were a hole anywhere wouldn't I get fumes even with windows/sunroof closed? There is not even the slightest whiff until I open something.
Edit: So I guess it isn't a trait of the marque then!
Paul, If there were a hole anywhere wouldn't I get fumes even with windows/sunroof closed? There is not even the slightest whiff until I open something.
Edit: So I guess it isn't a trait of the marque then!
Last edited by Penguin on 08 Mar 2010, 10:51, edited 1 time in total.
95 Xantia 1.9td SX
Just to give an idea of how much an exhaust can leak without it being detectable until the windows or sunroof are opened , the exhaust on mine has completely broken away at the rear silencer box connection and there is no smell of fumes until a window or the sunroof is opened !!
You will have an exhaust leak somewhere.
You will have an exhaust leak somewhere.
Now using '00 Xantia LX HDI, pov spec
My past Citroens :-
'00 Xantia SX HDI, now dead due to accident
'99 Xantia HDI 110 Exclusive, RIP
'97 Xantia TD SX
'96 Xantia TD LX
'96 ZX TD
'89 BX TD
'88 AX GT
'79 CX2400 Pallas (scrapped )
& a couple of Peugeots !
My past Citroens :-
'00 Xantia SX HDI, now dead due to accident
'99 Xantia HDI 110 Exclusive, RIP
'97 Xantia TD SX
'96 Xantia TD LX
'96 ZX TD
'89 BX TD
'88 AX GT
'79 CX2400 Pallas (scrapped )
& a couple of Peugeots !
- Old-Guy
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1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm) - x 17
What's happening is that opening a window or the sunroof when the car is moving, reduces the 'cabin' air pressure. If there's any sort of hole from an area of higher pressure outside into the cabin, air (and any exhaust fumes) is sucked into the car. You can reduce the effect by making sure the facia vents are open.
Another place to check is where the pipe goes into the front end of the rear silencer - the favourite place for exhaust failure - if it's not blowing badly, it's easily missed at the MoT. When you put a new box on, it's worth spraying the ends of the silencer with heat-proof paint (e.g. wood-burning stove paint). The box is made of coated steel, but the coating gets burnt off when the pipes are welded into it, leaving a ring of naked, stressed and already oxidised steel around the outside of the weld, which immediately starts rusting, and is why the pipe and weld breaks away from the box.
Another place to check is where the pipe goes into the front end of the rear silencer - the favourite place for exhaust failure - if it's not blowing badly, it's easily missed at the MoT. When you put a new box on, it's worth spraying the ends of the silencer with heat-proof paint (e.g. wood-burning stove paint). The box is made of coated steel, but the coating gets burnt off when the pipes are welded into it, leaving a ring of naked, stressed and already oxidised steel around the outside of the weld, which immediately starts rusting, and is why the pipe and weld breaks away from the box.
2011 Grand C4 Picasso VTR+ 1.6HDi in Kyanos Blue
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - after 11 years now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - after 11 years now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
I have to agree with this fellow,and old guy above. I have exactly the same symptoms. and, my exhaust pipe has just completely snapped off at the rear box,leaving the pipe resting on a bar/brace? that is bolted to each side of the car.HDI wrote:Just to give an idea of how much an exhaust can leak without it being detectable until the windows or sunroof are opened , the exhaust on mine has completely broken away at the rear silencer box connection and there is no smell of fumes until a window or the sunroof is opened !!
You will have an exhaust leak somewhere.
Open the windows and monoxide city lol.
Mine's been badly stick welded (burnt the flange away), so a lot of bodging for me will be needed.
I'm thinking of putting a metal sleeve\tube inside the back box and the pipe,bit of paste,maybe a bandage and some jubilees..don't care how pretty it is
Seems to be a common problem,that's where it snapped before,so it had a new zorst,and here we are again...the pipe's under a lot of tension at that joint upon inspection.
1999 Xantia LX 2.0 HDI 110 Rusteration project...
Yeah , it is common on Xantia's.Poor design really especially when the rest of the system is fine. I have repaired the one on my HDI once already and it's lasted 3 years.The flared pipe flange has broken up this time so it would be a PITA to repair again. I've just found a repair pipe on ebay, that doesn't have a centre silencer , for £18 odd + shipping , so I will go that option this time.
Now using '00 Xantia LX HDI, pov spec
My past Citroens :-
'00 Xantia SX HDI, now dead due to accident
'99 Xantia HDI 110 Exclusive, RIP
'97 Xantia TD SX
'96 Xantia TD LX
'96 ZX TD
'89 BX TD
'88 AX GT
'79 CX2400 Pallas (scrapped )
& a couple of Peugeots !
My past Citroens :-
'00 Xantia SX HDI, now dead due to accident
'99 Xantia HDI 110 Exclusive, RIP
'97 Xantia TD SX
'96 Xantia TD LX
'96 ZX TD
'89 BX TD
'88 AX GT
'79 CX2400 Pallas (scrapped )
& a couple of Peugeots !
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- Posts: 8061
- Joined: 30 Dec 2004, 23:10
- Location: Somewhere in North Wales, Anglesey
- My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto
2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising - x 70
I wouldn't worry about a centre silencer on the HDi what so ever!
The original XUD in the Xantia was only back box equipt, and the HDi is a 70% more cleaner engine so Id do away with it..
If you study the "Exhaust Tunnel" you'll see that its not really wide enough for a center box, just a Round style 'cat' near the front..
Paul
The original XUD in the Xantia was only back box equipt, and the HDi is a 70% more cleaner engine so Id do away with it..
If you study the "Exhaust Tunnel" you'll see that its not really wide enough for a center box, just a Round style 'cat' near the front..
Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
Turbo diesels are quiet enough without that centre box. In fact , even with the exhaust broken as it is the noise is still low !!
Now using '00 Xantia LX HDI, pov spec
My past Citroens :-
'00 Xantia SX HDI, now dead due to accident
'99 Xantia HDI 110 Exclusive, RIP
'97 Xantia TD SX
'96 Xantia TD LX
'96 ZX TD
'89 BX TD
'88 AX GT
'79 CX2400 Pallas (scrapped )
& a couple of Peugeots !
My past Citroens :-
'00 Xantia SX HDI, now dead due to accident
'99 Xantia HDI 110 Exclusive, RIP
'97 Xantia TD SX
'96 Xantia TD LX
'96 ZX TD
'89 BX TD
'88 AX GT
'79 CX2400 Pallas (scrapped )
& a couple of Peugeots !
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2008 C5 X7 1.6HDI VTR+ Saloon - x 231
I agree with Jim, it's probably the flexi-joint gasket between manifold and exhaust. I had this on my first TD with the exact symptoms you describe.
If you intend to keep the car, buy the genuine kit from Citroen as it's a high quality gasket (unlike the 3rd party offerings) and all new parts including bolts, nuts, cups, washers etc.
If you intend to keep the car, buy the genuine kit from Citroen as it's a high quality gasket (unlike the 3rd party offerings) and all new parts including bolts, nuts, cups, washers etc.
you can buy the woven wire/brilo pad type of sealing ring from the likes of GSF, they use to sell the full kit with an asortment of nuts,bolts, springs and washers,
the one to steer clear of is the nasty fiber type a lot of exhaust centres supply, as it will break up in no time at all
regards malcolm
the one to steer clear of is the nasty fiber type a lot of exhaust centres supply, as it will break up in no time at all
regards malcolm