2002 V70 D5 - soot/coking in rubber air pipes

chaznal · Jul 11th, 2015, 15:34

2002 V70 D5 200k - I've been fiddling around with starter motor today & took off the 3" rubber pipe that I'm guessing runs from the intercooler to the block. I noticed a sooty build up in the aluminium block to the right if the rubber pipe.

I took the 3 bolts out to inspect & noticed a heavy build up of coke/soot especially in an outlet port that goes directly into the engine block - may be restricting flow by 40-50%. Cleaned all this up & noticed that the lower end of the unit ie nearer the intercooler was more oily. Fired up the engine & noticed oily deposits had been 'fired out' of the open rubber pipe coming up from the intercooler.

The engine oil used to be perfectly clean & it is due a change but wondered if this sounds like worn cylinder rings allowing oil to leak out. Normally the oil is clean but now it's black - whoops???!

davebb · Jul 11th, 2015, 21:04

Hi
This is all Normal,The carbon/soot is from the EGR valve, and the oil in the intercooler /turbo pipes,comes from the turbo
GOOD LUCK, DAVE

moorgate · Jul 11th, 2015, 23:51

The way this seems to happen is that the oil comes from worn turbo seals, and the soot from an underperforming injector. When they meet up courtesy of the EGR valve (that "hole in the block" you mention) you get a delightful horrible gluey goopy paste, which makes the problem worse by making the engine make more smoke and deposit more soot.

Take the various pipes off and clean them out, but also attend to those turbo seals - apparently it's not too hard a job. Before mine were done I was doing a couple of hundred ML of oil per month or so: Afterwards, I'm using nil. zip. zero.

chaznal · Jul 12th, 2015, 13:40

...I've had a look & finding it difficult to track a thread here &/or youtube for V70 turbo seal replacement / repair. Anyone have any insight or leads - how complex a job is it?!?? C

D5meister · Jul 13th, 2015, 20:25

you dont need to worry. They all look like that.

The first time u see it its - Err my motors all but dead..

Brush out what u can with GUNK or degreaser/carb cleaner.

Poke a ball of cloth thru get it all as good as u can an re assemble.

Do it again in 2 years time.

I dont use oil but I get the shocker mess too.

moorgate · Jul 14th, 2015, 19:19

Quote:

Originally Posted by chaznal

...I've had a look & finding it difficult to track a thread here &/or youtube for V70 turbo seal replacement / repair. Anyone have any insight or leads - how complex a job is it?!?? C

http://www.volvoforums.org.uk/showth...light=v70+vane

http://www.volvoforums.org.uk/showth...light=v70+vane

http://www.volvoforums.org.uk/showth...light=v70+vane

Jul 11th, 2015, 15:34	#1
chaznal New Member Last Online: Mar 12th, 2024 10:35 Join Date: Apr 2009 Location: Stafford	2002 V70 D5 - soot/coking in rubber air pipes 2002 V70 D5 200k - I've been fiddling around with starter motor today & took off the 3" rubber pipe that I'm guessing runs from the intercooler to the block. I noticed a sooty build up in the aluminium block to the right if the rubber pipe. I took the 3 bolts out to inspect & noticed a heavy build up of coke/soot especially in an outlet port that goes directly into the engine block - may be restricting flow by 40-50%. Cleaned all this up & noticed that the lower end of the unit ie nearer the intercooler was more oily. Fired up the engine & noticed oily deposits had been 'fired out' of the open rubber pipe coming up from the intercooler. The engine oil used to be perfectly clean & it is due a change but wondered if this sounds like worn cylinder rings allowing oil to leak out. Normally the oil is clean but now it's black - whoops???! Last edited by chaznal; Jul 11th, 2015 at 15:51. Reason: title

Jul 11th, 2015, 21:04	#2
davebb Premier Member Last Online: May 4th, 2024 13:46 Join Date: Aug 2013 Location: Emsworth,hants	Hi This is all Normal,The carbon/soot is from the EGR valve, and the oil in the intercooler /turbo pipes,comes from the turbo GOOD LUCK, DAVE

Jul 11th, 2015, 23:51	#3
moorgate Senior Member Last Online: Apr 24th, 2024 22:56 Join Date: Apr 2015 Location: london, ec2	The way this seems to happen is that the oil comes from worn turbo seals, and the soot from an underperforming injector. When they meet up courtesy of the EGR valve (that "hole in the block" you mention) you get a delightful horrible gluey goopy paste, which makes the problem worse by making the engine make more smoke and deposit more soot. Take the various pipes off and clean them out, but also attend to those turbo seals - apparently it's not too hard a job. Before mine were done I was doing a couple of hundred ML of oil per month or so: Afterwards, I'm using nil. zip. zero.

Jul 12th, 2015, 13:40	#4
chaznal New Member Last Online: Mar 12th, 2024 10:35 Join Date: Apr 2009 Location: Stafford	...I've had a look & finding it difficult to track a thread here &/or youtube for V70 turbo seal replacement / repair. Anyone have any insight or leads - how complex a job is it?!?? C

Jul 13th, 2015, 20:25	#5
D5meister Premier Member Last Online: Feb 10th, 2024 19:13 Join Date: Nov 2008 Location: Huntingdon	you dont need to worry. They all look like that. The first time u see it its - Err my motors all but dead.. Brush out what u can with GUNK or degreaser/carb cleaner. Poke a ball of cloth thru get it all as good as u can an re assemble. Do it again in 2 years time. I dont use oil but I get the shocker mess too.

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