Exhaust gases in engine bay

elecracer · 10-19-2011, 03:41 PM

Afternoon

My first post so hopefully you guys can help
I have a 407 SW 2.0 hdi 2006, when you blip the throttle to around 2000rpm you can see what appears to be exhaust gases coming from the back of the engine compartment.
Exact location is not known, but if you follow the air intake pipes to the back of the engine thats were it appears. Car is still in warranty, and has been back, the garage can't find were its coming from.

Anyone able to help diagnose the problem/or point me in the right direction.

Charles

jmkent · 10-19-2011, 03:46 PM

The turbo is back there on these engines - nightmare to get to.
Check the clamps around all hoses on the turbo

elecracer · 10-19-2011, 03:52 PM

Crikey thanks for the quick reply

Can you feel with you hands or is it a case of trying to look ?

jmkent · 10-19-2011, 03:56 PM

Not 100% where it is - I've tried looking on mine before, but can't see a thing back there.
The gases could be coming from any number of hose clamps, exhaust clamps, diff pressure sensor pipes..... only real solution is to inspect all of them.

Just how much gas is actually coming up?

elecracer · 10-19-2011, 04:15 PM

Hard to tell, but you can see it. only happens when revving. and goes away on tick over. I have been under the car with a lamp and can see what appears to be soot marks on the exhaust tunnel/bulkhead.

The car drives like a train, no lack of power, but when in slow moving traffic you can smell the fumes in the cabin.

Charles

trem1 · 10-19-2011, 04:50 PM

The 1.6's have been known to do this but this is the first 2.0 ive heard of

elecracer · 10-19-2011, 05:26 PM

So if it was a 1.6, what is the cause on them ? or are they totally different ?

As said above, car has been back to garage and they are unable to see/find the cause.
They have suggested that I drive the car and see if it gets worse then they maybe able to see where/what is going on.

Only had the car two weeks, been great until this.

trem1 · 10-19-2011, 05:40 PM

407 turbo leak

Exhaust fumes inside 307 1.6hdi

all i can be bothered to find atm

elecracer · 10-19-2011, 06:15 PM

Trem1

big help, just read both links and they sound right. Will pass this info onto the garage and see what they say.

Can't believe that the joints are so easy to damage. If its leaking top or bottom hope the garage sort it properly.

Will update if I get a solution.

Thanks again.

Charles

WOODLEYPUG · 10-19-2011, 06:16 PM

egr valve

10-19-2011, 03:41 PM	#1
elecracer Junior Member Join Date: Oct 2011 Location: Rotherham South Yorkshire Posts: 17	Exhaust gases in engine bay Afternoon My first post so hopefully you guys can help I have a 407 SW 2.0 hdi 2006, when you blip the throttle to around 2000rpm you can see what appears to be exhaust gases coming from the back of the engine compartment. Exact location is not known, but if you follow the air intake pipes to the back of the engine thats were it appears. Car is still in warranty, and has been back, the garage can't find were its coming from. Anyone able to help diagnose the problem/or point me in the right direction. Charles Share Share this post on Digg Del.icio.us Technorati Twitter

10-19-2011, 03:46 PM	#2
jmkent Senior Member Join Date: Sep 2010 Location: St Austell, Cornwall Posts: 2,969	The turbo is back there on these engines - nightmare to get to. Check the clamps around all hoses on the turbo Share Share this post on Digg Del.icio.us Technorati Twitter __________________ 407SW 2.0HDI 136 SE 2005 ex. 306 2.0HDI 90 (x2)

10-19-2011, 03:52 PM	#3
elecracer Junior Member Join Date: Oct 2011 Location: Rotherham South Yorkshire Posts: 17	Crikey thanks for the quick reply Can you feel with you hands or is it a case of trying to look ? Share Share this post on Digg Del.icio.us Technorati Twitter

10-19-2011, 03:56 PM	#4
jmkent Senior Member Join Date: Sep 2010 Location: St Austell, Cornwall Posts: 2,969	Not 100% where it is - I've tried looking on mine before, but can't see a thing back there. The gases could be coming from any number of hose clamps, exhaust clamps, diff pressure sensor pipes..... only real solution is to inspect all of them. Just how much gas is actually coming up? Share Share this post on Digg Del.icio.us Technorati Twitter __________________ 407SW 2.0HDI 136 SE 2005 ex. 306 2.0HDI 90 (x2)

10-19-2011, 04:15 PM	#5
elecracer Junior Member Join Date: Oct 2011 Location: Rotherham South Yorkshire Posts: 17	Hard to tell, but you can see it. only happens when revving. and goes away on tick over. I have been under the car with a lamp and can see what appears to be soot marks on the exhaust tunnel/bulkhead. The car drives like a train, no lack of power, but when in slow moving traffic you can smell the fumes in the cabin. Charles Share Share this post on Digg Del.icio.us Technorati Twitter

10-19-2011, 04:50 PM	#6
trem1 Senior Member Join Date: Jan 2010 Location: south shields,tyneside Posts: 1,631	The 1.6's have been known to do this but this is the first 2.0 ive heard of Share Share this post on Digg Del.icio.us Technorati Twitter __________________ 2004 136bhp 2.0 hdi

10-19-2011, 05:26 PM	#7
elecracer Junior Member Join Date: Oct 2011 Location: Rotherham South Yorkshire Posts: 17	So if it was a 1.6, what is the cause on them ? or are they totally different ? As said above, car has been back to garage and they are unable to see/find the cause. They have suggested that I drive the car and see if it gets worse then they maybe able to see where/what is going on. Only had the car two weeks, been great until this. Share Share this post on Digg Del.icio.us Technorati Twitter __________________ 407SW 2.0hdi 136 Sport 2006

10-19-2011, 05:40 PM	#8
trem1 Senior Member Join Date: Jan 2010 Location: south shields,tyneside Posts: 1,631	407 turbo leak Exhaust fumes inside 307 1.6hdi all i can be bothered to find atm Share Share this post on Digg Del.icio.us Technorati Twitter __________________ 2004 136bhp 2.0 hdi

10-19-2011, 06:15 PM	#9
elecracer Junior Member Join Date: Oct 2011 Location: Rotherham South Yorkshire Posts: 17	Trem1 big help, just read both links and they sound right. Will pass this info onto the garage and see what they say. Can't believe that the joints are so easy to damage. If its leaking top or bottom hope the garage sort it properly. Will update if I get a solution. Thanks again. Charles Share Share this post on Digg Del.icio.us Technorati Twitter __________________ 407SW 2.0hdi 136 Sport 2006

10-19-2011, 06:16 PM	#10
WOODLEYPUG Junior Member Join Date: Oct 2011 Posts: 2	egr valve Share Share this post on Digg Del.icio.us Technorati Twitter

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