c5 2.2 hdi help

[Damien]

Hi all looking for some help with my c5 2.2 hdi estate auto, been having usual partical filter errors and going into limp mode for a few weeks , then on friday the revs hit the roof and a load of white/grey smoke came out the exhaust, turned ignition off to stop engine, got it recovered home and started checks, thinking turbo has blown first thing i did was check oil level its about an inch over the max level??? so i've gained some from somewhere not creamy so i'm thinking diesel has entered somewhere, got oil around intercooler at bottom and in air pipes, none in airfilter. decided to drop oil and filter, fill with new oil to correct level, start car and see if level goes up, did this, engine sounds sweet no obvious problems until i revved up. it would seem that when the turbo kicks in around 1400rpm it just goes ballistic, revs off the scale again turned key off to stop. im assuming my turbo is kaput, any help or advice on removal or other cause would be very much appeciated, got to do it myself or its going to the c5 heaven i'm afraid
thanks in advance
Damien

its a 2001 , with full history , 150k and i love it

[SwissSPEC]

Sounds like diesel runaway, probably an injector has failed & the ecu thinks that its not getting enough fuel, so it pumps tons of it in which is causing the problem. I've seen a mates Astra do this, the amount of white smoke & the fact the engine just revved up without touching the throttle was impressive. When he cut the engine ignition, my god, the knocking sound the engine made was equally impressive. Again the dip stick showed that the oil level was over full & it stunk of diesel

[Damien]

Many thanks for your reply, will look down that path first.

[myglaren]

Also be aware of the danger of runaway if the oil level gets too high:

[psw]

I had the same last year with my 2002 C5 2.2 - seals on turbo failed and had turbo runaway. Turning the key to stop the engine had no effect as engine was feeding on the engine oil. Only way to stop it was stall the engine, not easy when running at max revs. Whatever you do not try and re-start the engine. I was able to get the turbo overhauled. You will need to clean out the intercooler as mine had filled with oil. When I checked the oil level it was below minimum.

[psw]

Reference my earlier message. This is the company that overhauled my turbo. http://www.aceturbo.co.uk/index.php" onclick="window.open(this.href);return false;

[Damien]

thanks psw, dont want to risk starting it up to do a leakoff test, thinking your right about the turbo, did you remove it yourself? i'm thinking i could tilt the engine downwards towards the front, after removing the mounting, to get at it, is this possible ?
Again many thanks to all who have replied and any info advise on removal would be great

[psw]

Couldn't remove myself, don't have any facilities, entrusted to my local indy garage. Old fashioned garage - auto engineers.

[Damien]

thanks for reply psw . got a reconditioned turbo for 250 with 2 year warranty
managed to get most of the breather pipes, exhaust system, intercool off and cleaned just the dreaded turbo now, hoping i can do it as funds have run out again, no car no work! chicken and egg syndrome . spoke to a local citroen engineer and he says I have to take the head off or remove the engine completley to get at it dont fancy doing that

[waynedance]

I changed my turbo myself. Was a little difficult but made easier with car on the ramp in the air. Needed a rachet with long extension to reach up back of the engine to the bolts that hold turbo onto the manifold. Will need to remove the driveshaft on drivers side to aid access.

Took me approx 3-4hrs to swap from memory it was 14 months ago.

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[Damien]

Hi wayne thanks for info, found this online
1. Removing turbo c5 2.2hdi
URGENT : Respect the safety and cleanliness recommendations that are specific to high pressure diesel injection (HDi) engines.
URGENT : Do not separate the pressure regulation valve from the turbocharger or slacken its fixings.
Remove :
The engine cover
The battery style cover
Disconnect the battery negative terminal.
Remove :
The air cleaner
The engine subframe (see the relevant operation)
The assembly of exhaust flexible / catalytic converter / particle filter
Remove :
The turbocharger air inlet duct , as "a"
The turbocompressor air outlet duct, as "b"
The bracket (1)
Uncouple :
The turbocharger oil supply pipe (2) (on the engine)
The turbocharger oil return pipe (6) (on the engine)
Remove :
The nut (4) (from above the vehicle)
The nuts (3) (from underneath the vehicle)
The turbocharger (5) (from underneath the vehicle)
CAUTION : Close the lubrication ducts and the oil return ducts on the turbocharger and the engine.
2. Refitting
Proceed in the reverse order to removal.
CAUTION : Check the absence of foreign bodies in the air ducts when refitting.
Tightening torque :
Nut ( 4) to 2,5 ± 0,2 m.daN
Nuts (3) to 2,5 ± 0,2 m.daN

[waynedance]

I certainly did not remove the subframe or I think air cleaner but did remove the o/s driveshaft.

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[Damien]

thinking that myself, managed to get exhaust off and air pipes today will be doing drive shaft tomorrow, as you say looks the easier option

[waynedance]

Drive shaft is easy to remove but be careful to catch the gear oil that leaks out, horrid stuff if you get it on your clothes.

I drained my gearbox as I did not know how much had leaked out and put back in the correct amount which I think was 1.8 litres.

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[Damien]

will do thanks ,,
mines an auto so will have to check up on level. Have you got any thoughts on removing the dpf while i got it off?