Hi all, I am having problems with oil leaks on the car. I have replaced all the seals and I have recently had to replace the turbo as well. I have oil pooling on the compressor side of the turbo only in the inlet it doesn't seem to be pooling in the outlet resonator. The shaft on the new turbo has no back and forth play and minimal axial play so I don't think it is the turbo at this point. I believe crank case pressure is elevated.
It is pissing oil out past the seal on the turbo oil pipe as well.
It seems to be pushing oil past the main crank seal again as it's all over the flywheel and starter. I rebuilt the head last year due to injection issues and have had continuous issues with smoke of the white and now blue variety. Exhaust differential pressure is 3 to 5 mbar 101% clogged and 26g of soot possibly causing back pressure.i will pull the cat and Dpf and try power housing them back.
Fuel rail pressure is 228 to 234 bar so the regulator appears to be controlling correctly which would indicate no major injector leaks causing cylinder wash.
She cranks evenly so I don't hear a compression issue. Could this be caused by A) exhaust or B) bad valve stem seals. They were replaced but may be faulty I'm thinking. Any other suggestions and possible causes.
Citroen c5 x7 2.0 hdi oiling issue at the turbo
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darbuck
- Donor 2024
- Posts: 1609
- Joined: 25 May 2014, 16:45
- x 291
-
darbuck
- Donor 2024
- Posts: 1609
- Joined: 25 May 2014, 16:45
- x 291
Re: Citroen c5 x7 2.0 hdi oiling issue at the turbo
I have pulled the new turbo out and there is no play but there is a a little rattle in it which makes me think it is piston ring loose in it it clinks a bit when I rotate the shaft so I think it's the problem. I'm sending it back hopefully tomorrow if the seller comes back to me today with delivery details.
Darren
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darbuck
- Donor 2024
- Posts: 1609
- Joined: 25 May 2014, 16:45
- x 291
Re: Citroen c5 x7 2.0 hdi oiling issue at the turbo
Ok I received the new turbo and fitted it. There are posts which say you need to remove the subframe, I didn't and I don't see any benefit to doing so it helps you not drop the fiddly pre-cat on your head while lying on the drive way.
Right hand shaft has to come out and so does the rear engine mount. I drained the gear oil. There's a bracket that holds the pre-cat in position just up behind the turbo exhaust side connection. This is attached to the manifold by a 13mm nut on the manifold and 13mm bolt in the top of the precat.
This you can get at from above. The worst part of the whole job is the clamp that holds the pre-cat to the turbo this a pig to get on and off it has a 14mm bolt that holds it in place.
Take both the precat and the turbo off as one unit it's just easier. There is a lower bracket on the turbo that you need to remove I can't remember the bolt sizes but I think they are 13mm.
There are 2 nuts and a bolt all 13mm that hold the turbo to the manifold you will have to do these blind from above use your phone or a mirror or scope to get your bearings as to where they are, they are in the centre of the rear of the engine and exhaust manifold.
The egr cooler is kind of in the way but you can get them without removing it. I wouldn't bother for what it will give you.
Its recommended you change the oil line so I did. you need to attach this to the turbo off the car. All the other bits you can get from below.
Disconnect the lower pre-cat exhaust connection by removing the clamp. Pi removed the Dpf but it's not necessary as I removed it for cleaning.
Once that's done it's a doddle to do the rest. Take your time and plan it in steps and you will be fine. I took two evenings to get the turbo and pre-cat in.removing the Dpf and cat makes it a lot easier, I had to do this to clean them so it suited me. I still have the Dpf to refit but it's not difficult.
Don't forget to prime the turbo i.e disconnect the oil return and make up some sort of a pipe into a basin and crank it over with the injectors unplugged. If all good and oil flows well complete assembly and start her up. If not you need to check your oil feeds and possibly oil pump. Good luck it's a good bit of work but doable.
Right hand shaft has to come out and so does the rear engine mount. I drained the gear oil. There's a bracket that holds the pre-cat in position just up behind the turbo exhaust side connection. This is attached to the manifold by a 13mm nut on the manifold and 13mm bolt in the top of the precat.
This you can get at from above. The worst part of the whole job is the clamp that holds the pre-cat to the turbo this a pig to get on and off it has a 14mm bolt that holds it in place.
Take both the precat and the turbo off as one unit it's just easier. There is a lower bracket on the turbo that you need to remove I can't remember the bolt sizes but I think they are 13mm.
There are 2 nuts and a bolt all 13mm that hold the turbo to the manifold you will have to do these blind from above use your phone or a mirror or scope to get your bearings as to where they are, they are in the centre of the rear of the engine and exhaust manifold.
The egr cooler is kind of in the way but you can get them without removing it. I wouldn't bother for what it will give you.
Its recommended you change the oil line so I did. you need to attach this to the turbo off the car. All the other bits you can get from below.
Disconnect the lower pre-cat exhaust connection by removing the clamp. Pi removed the Dpf but it's not necessary as I removed it for cleaning.
Once that's done it's a doddle to do the rest. Take your time and plan it in steps and you will be fine. I took two evenings to get the turbo and pre-cat in.removing the Dpf and cat makes it a lot easier, I had to do this to clean them so it suited me. I still have the Dpf to refit but it's not difficult.
Don't forget to prime the turbo i.e disconnect the oil return and make up some sort of a pipe into a basin and crank it over with the injectors unplugged. If all good and oil flows well complete assembly and start her up. If not you need to check your oil feeds and possibly oil pump. Good luck it's a good bit of work but doable.
Darren