V70 D5 Just cleaned out my EGR mixer pipe - jesus!!

dave_s13 · Apr 25th, 2010, 15:30

Can't believe how much gunk was accumulated in the thing.

I dread to think how messy the top of the engine is.

Here's some pics anyway.

The mixer pipe is the metal 90deg pipe in the right of the image. It was well caked in slimey black sooty cr@p.

Also the inlet into the top of the engine was thick with the same gunk.

Prior to removal

After removal

The EGR inlet hole (I think)

This is the common point for people to blank off the EGR.

And after a good clean up

Cleaned it up using carb cleaner and a LOT of kitchen roll. If you're going to do it invest in some latex gloves as it's a very messy job. Also tried as best as I could to clean out the top of engine inlet pipe and managed to scoop out a lot of mess with my fingers then cleaned out with carb cleaner and kitchen roll. It would really mean taking the top engine cover off to clean out properly but this would take a lot longer and mean messing about with the fuel lines, couldn't be bothered with that.

Easy job, just need a screw driver for the jubilee clips, takes an hour max.

The car seems to run a little smoother now and throttle response has improved, not a hugely noticable difference but it can't be good for the car to have all that horrible gunky cr@p in there.

For info my car is a 2002 V70 D5 on 103k.

The question is, would blanking my EGR valve prevent this from building up in future? I'm tempted to leave it be as the car runs fine as is.

Redtwin · Apr 25th, 2010, 20:09

Blanking the EGR would prevent the sooty exhaust gases from getting in there so yes it would stay alot cleaner. The issue is whether your ECU would register an error code due to the blanked off EGR.

I used to have a BMW 330D that I blanked off the EGr and I had no issues with error codes, but that is of course a completely different car.

If you consider cleaning it as a yearly service regimen then you could probably skip blanking it and stay on top of the gunge build up.

outnumbered · Apr 25th, 2010, 20:56

did mine last weekend and just as bad as yours, as said you may have issues blanking it of and doing it yearly will not be as bad.
mike

dave_s13 · Apr 25th, 2010, 22:50

I'm going to leave it alone, it's not broke and all that

Amazing how badly these things crud up though, I wasn't expecting that much!

myfirstv70 · Apr 26th, 2010, 06:53

Hi,
Can you notice any difference in the way the car drives since you cleaned the EGR out? Does it pull better or less smoke.....? I'm amazed how much crap had built up!
Cheers,
Nobby

dave_s13 · Apr 26th, 2010, 07:06

The difference is not that pronounced to be honest but it does seem to pull more consistently under hard acceleration. It also seems to start easier, not that it was bad before, fires up after a couple of turns of the engine rather than 3 or 4 and throttle respose seems to have improved.

I think some people have seen an improvement in MPG but it's a bit early for me to see that.

Ultimately, if your car has any mileage on it this pipe WILL be full of horrible nasty sheeiite. It makes sense that it would be better off not being there.

Dead easy job, just a bit messy.

dave_s13 · Apr 26th, 2010, 07:07

Quote:

Originally Posted by myfirstv70

Hi,
Can you notice any difference in the way the car drives since you cleaned the EGR out? Does it pull better or less smoke.....? I'm amazed how much crap had built up!
Cheers,
Nobby

Just notice. This is not the EGR valve itself but the mixer plenum pipe and associated pipework.

I would imagine it's only worth messing with the valve itself if you are getting error codes?

hobbyhorse · Apr 26th, 2010, 08:07

Take care guys, that stuff is highly carciogenic

chieftiff · Apr 26th, 2010, 12:44

Hi Dave,

I don't want to worry you but look a bit further up the inlet tract. That is in the inlet plenum. There are other posts about this. I have a 2002 V70 and at 105k my EGR valve was all blocked up and the inlet plenum was the same. I was horrified as it looked like the old "black death" syndrome. Anyway I cleaned it all out (and yes you can re-use the injector pipes) and blanked off the egr. I have now done 163k and the inlet is still spotless and no more crap is going into my engine which is still sweet, drives well and passes MOTs no problem. No alarms or warnings at all.

Dave

Nick44 · Apr 26th, 2010, 16:44

Showing my Ignorance here people, and anyway I hate TLA's
What does EGR stand for please?

Apr 25th, 2010, 15:30	#1
dave_s13 Member Last Online: Oct 21st, 2013 13:02 Join Date: Apr 2010 Location: leeds	V70 D5 Just cleaned out my EGR mixer pipe - jesus!! Can't believe how much gunk was accumulated in the thing. I dread to think how messy the top of the engine is. Here's some pics anyway. The mixer pipe is the metal 90deg pipe in the right of the image. It was well caked in slimey black sooty cr@p. Also the inlet into the top of the engine was thick with the same gunk. Prior to removal After removal The EGR inlet hole (I think) This is the common point for people to blank off the EGR. And after a good clean up Cleaned it up using carb cleaner and a LOT of kitchen roll. If you're going to do it invest in some latex gloves as it's a very messy job. Also tried as best as I could to clean out the top of engine inlet pipe and managed to scoop out a lot of mess with my fingers then cleaned out with carb cleaner and kitchen roll. It would really mean taking the top engine cover off to clean out properly but this would take a lot longer and mean messing about with the fuel lines, couldn't be bothered with that. Easy job, just need a screw driver for the jubilee clips, takes an hour max. The car seems to run a little smoother now and throttle response has improved, not a hugely noticable difference but it can't be good for the car to have all that horrible gunky cr@p in there. For info my car is a 2002 V70 D5 on 103k. The question is, would blanking my EGR valve prevent this from building up in future? I'm tempted to leave it be as the car runs fine as is. Last edited by dave_s13; Apr 25th, 2010 at 15:53.

Apr 25th, 2010, 20:56	#3
outnumbered Lunatic from Wakefield Last Online: Apr 16th, 2023 06:33 Join Date: Dec 2004 Location: wakefield	did mine last weekend and just as bad as yours, as said you may have issues blanking it of and doing it yearly will not be as bad. mike __________________ 2012 volvo xc90 Executive Buccaneer Bermuda 2021

Apr 26th, 2010, 08:07	#8
hobbyhorse Premier Member Last Online: Jan 26th, 2015 21:30 Join Date: Dec 2006 Location: Billericay	Take care guys, that stuff is highly carciogenic __________________ V70 D5 SE '53 Ricasportune 210 - departed 17.09.11

Apr 26th, 2010, 16:44	#10
Nick44 Ex 850/V70 Register Keepe Last Online: Nov 22nd, 2022 15:29 Join Date: May 2006 Location: Hoo, Kent View Photos By: Nick44	Showing my Ignorance here people, and anyway I hate TLA's What does EGR stand for please? __________________ 66,145,264 GLE,265 GLE (2 off),765 GLE,740 GL Estate, G 760 GLE Estate, N 960 CDi, W 940 SE,'51 V70 T,'56 V70 T5. '57 G3 V70 D5 '10 V70 T6 AWD Polestar (Bye Bye), Wife's '03 S80 SE I like Volvos.

Apr 25th, 2010, 20:09	#2
Redtwin Junior Member Last Online: Dec 13th, 2010 09:06 Join Date: Feb 2010 Location: Lancashire	Blanking the EGR would prevent the sooty exhaust gases from getting in there so yes it would stay alot cleaner. The issue is whether your ECU would register an error code due to the blanked off EGR. I used to have a BMW 330D that I blanked off the EGr and I had no issues with error codes, but that is of course a completely different car. If you consider cleaning it as a yearly service regimen then you could probably skip blanking it and stay on top of the gunge build up.

Apr 25th, 2010, 22:50	#4
dave_s13 Member Last Online: Oct 21st, 2013 13:02 Join Date: Apr 2010 Location: leeds	I'm going to leave it alone, it's not broke and all that Amazing how badly these things crud up though, I wasn't expecting that much!

Apr 26th, 2010, 06:53	#5
myfirstv70 Senior Member Last Online: Apr 24th, 2024 17:24 Join Date: Dec 2008 Location: Lincoln	Hi, Can you notice any difference in the way the car drives since you cleaned the EGR out? Does it pull better or less smoke.....? I'm amazed how much crap had built up! Cheers, Nobby

Apr 26th, 2010, 07:06	#6
dave_s13 Member Last Online: Oct 21st, 2013 13:02 Join Date: Apr 2010 Location: leeds	The difference is not that pronounced to be honest but it does seem to pull more consistently under hard acceleration. It also seems to start easier, not that it was bad before, fires up after a couple of turns of the engine rather than 3 or 4 and throttle respose seems to have improved. I think some people have seen an improvement in MPG but it's a bit early for me to see that. Ultimately, if your car has any mileage on it this pipe WILL be full of horrible nasty sheeiite. It makes sense that it would be better off not being there. Dead easy job, just a bit messy.

Apr 26th, 2010, 12:44	#9
chieftiff Junior Member Last Online: Mar 3rd, 2015 15:13 Join Date: Feb 2007 Location: southampton	Hi Dave, I don't want to worry you but look a bit further up the inlet tract. That is in the inlet plenum. There are other posts about this. I have a 2002 V70 and at 105k my EGR valve was all blocked up and the inlet plenum was the same. I was horrified as it looked like the old "black death" syndrome. Anyway I cleaned it all out (and yes you can re-use the injector pipes) and blanked off the egr. I have now done 163k and the inlet is still spotless and no more crap is going into my engine which is still sweet, drives well and passes MOTs no problem. No alarms or warnings at all. Dave

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