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Discussion Starter · #1 ·
Hi all

I have just had my 2004 2.2 DCI SVE (72K) serviced, and after 1 week vehicle has developed a very high pitch whistle consistant with Turbo revs. (Sounds like a distant cop car coming down the road). The engine still pulls well just makes the whistling sound, no drop off in performance.

I took off intercooler and opened up the pipes and cleaned out small amount of oil, I did initially think it was a cracked pipe now I am having my doubts.

Tomorrow I am going to grab lighter fluid to see if it has any effect around the actuator area, if not I am guessing the Turbos on its way out (I now wish I had serviced it my self, I would have definately known what oil was added).

Does anyone know / recommend an aftermarket Turbo that is a direct replacement?

Cheers
 

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hi, there sounds like the turbo. going to cost big bucks..... :bigcry: not sure of a aftermarket turbo get on the web and try and get a good price.. you could try sniffydog and see if you can pick up a good 2nd hand one, mine went the same traded it in for a newer xtrail 2.5 and had it converted to lpg...good luck..regards..mark .......you can try midlandturbo.com there web site gives you a few options... new .refurb .or repair
 

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Antioch said:
Hi all

I have just had my 2004 2.2 DCI SVE (72K) serviced, and after 1 week vehicle has developed a very high pitch whistle consistant with Turbo revs. (Sounds like a distant cop car coming down the road). The engine still pulls well just makes the whistling sound, no drop off in performance.

I took off intercooler and opened up the pipes and cleaned out small amount of oil, I did initially think it was a cracked pipe now I am having my doubts.

Tomorrow I am going to grab lighter fluid to see if it has any effect around the actuator area, if not I am guessing the Turbos on its way out (I now wish I had serviced it my self, I would have definately known what oil was added).

Does anyone know / recommend an aftermarket Turbo that is a direct replacement?
Cotact Tuboactive.
Your Turbo is X-Trail DCI - 136hp (OEM Part No:727477-0005)
Manufactures original Part No:14411-AW400. (Alternate Part No:14411-AW40A)
Turboactive web site link
http://www.turboactive.com/
Make sure you get a fixing kit too
Left click mouse to open jpeg file.
XTUKb.jpg


Guide for fitting a new turbo

View attachment Fitting instructions New Turbo.pdf

Note: If you have difficulty viewing pdfs online, download and install the most current version of Acrobat Reader. Free Download available at http://www.adobe.com.
 

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Discussion Starter · #4 ·
Thanks .. I am undecided which way to go yet as I have limited free time.

I am experianced with turbos from my Celica GT4 days .. on the X-trail the job can be done in situ right? (I might just book a couple days off work and nail it myself).

Also back on the cooler, is there any real advantage of changing cooler as its crimped type and obviously leaks, or just clean and re-fit?

Cheers
 

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Discussion Starter · #5 ·
Ok

Turbo Removal.

I tackled this job myself.

Intercooler is super easy as is the inlet pipework to turbo - there is an oil breather from engine on the rubber elbow (you do not need to remove the air box, just the rubber last inlet pipe). Once you remove rubber pipe you can remove the inlet alu pipe to Turbo - this gives you access to check play in bearing etc .. I can see a small trace of oil at the inlet side and my Turbo has slight radial play, no axial.

I found it difficult to work round the radiator and therefore decided to drop the water and remove fans and radiator ... to do this you need also to remove battery and swing the battery holder backwards.

I then removed the lower plated metal water pipe that runs across the turbo plus i decided to open up the thermostat housing - this just made it a little easier to work round - you might manage without doing this.

Once the rads off - carfully working infront of air con radiator - no need to remove this then :

You have to remove all the heat sheilds off the exhaust manifold and exhaust pipework (cat) at the front of the engine and underneath where the exhaust pipe joins the cast downpipe (cat) - this allows you to split the exhaust joint (3 bolts). I also removed the bracket, both bolts, for the cast downpipe.

Now I have access to all turbo and manifold and cast downpipe.

I removed the cast pipe from exhaust side of turbo, pretty heavy, shame it has to go back on ;)

The Turbo to manifold bolts (2 of 3) can be loosened but the one hiding up at the back is impossible.

Therefore you have to remove all the exhaust manifold and seperate from head and heat exchanger - slight chance you can damage a stud here - I did on heat exchanger flange - ended up drilling it out and will replace with 10 mm Hex bolt and manifold nut.

When all exhaust manifold bolts are loose I disconnected the rubber oil return pipe from Turbo to Block - fairly easy.

Then un screwed the oil feed pipe from block - this is a little more tricky as its a skinny head union bolt with little room to work in, becareful you do not buzz the head.

The turbo and manifold was then free to lift out - block all the ports / oil holes up with rags to prevent dust ingress.

Now with Turbo on bench you can seperate from manifold and remove oil feed pipe - I have not yet decided if I will replace or just clean then blow out this pipe with compressed air.

I have purchased a Nissan Turbo Kit of gaskets from ebay - pretty good - everything you need to reassemble including new studs and nuts.

Now I am waiting for my Turbo to arrive from Umbongos recommended site - I went for a new unit at £717 all in.

I will update further progress once I am re-assembled - still undecided on leaving intercooler in its leaking air state or not - I do not see how this can do too much harm apart from tiny air leak to engine.
 

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Discussion Starter · #8 ·
ok the vehicle is cured + better - you all should note this - even my cooler tho slightly leakin now i cannot tell as my turbo bearings hold.
I should also say (again) kudos for the fully syth 5 w 40 oil .. made the unit tight and quiet.

TY all
 

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Is any whistle permissable? My T31 whistles slightly but I have nearly a years warrenty left. It is just about audiable when the engine is cold, but is gone / almost gone when the engine is warm. I mentioned it at the last service in Feb but they seemed to think it was OK, but then perhaps they would.
 

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im really confused at this turbo topic. When you can hear a whistle/whine from the car does that mean the turbos working fine or is that a trouble sound. Mines is silent i cant hear the turbo at all seems to be fine though. but what i want to know is what is good/normal noise or no noise???? :?:
 

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In my experience (had turbo diesels for over 18 years) they all whistle a little, some are quieter than others. On to our second X trail Dci now and they both whistle a little though very quiet compared to some Peugeots and Fords I have had over the years.
I have a Vauxhall Insignia CDTI 160 at the moment as a company car and you have to listen very carefully to hear its turbo at all. Very quiet indeed....
My concern with the XT is the slight oil leak from the intercooler, not a lot but it is there and needs cleaning off once a week. Everybody I have spoken to says its normal but why, none of my other turbo intercooled diesel cars have leaked. Is it anything to worry about fellow x trailers???
Cheers
 

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i personaly think there shouldnt be any oil leak that is not normal as you wouldnt accept a sump plug leaking or a fuel leak why accept a oil leak anywhere just tell the garage to stop being idots and get it sorted now before it gets worse
 

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Hi Antioch. I have the same problem as you. Took the car to turbo specialist to listen to to confirm wether turbo or air leak and he said turbo :bigcry: he reckons the turbo has over sped at some time and that took the tips off the turbine blades causing the air traveling over them to whistle. I am going to attempt to remove the turbo myself like you. I looked at your excellent post on turbo removal and looking under the car there is a what looks like a heavy gauge protection plate that runs down from front of car to behind the gearbox bolted on by 2 bolts either end. Did you remove this plate to give you easier access to the heat shields around exhaust or did you manage without removal.
Cheers. Martyn.
 

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Discussion Starter · #14 ·
Hi

Your plate sounds like an aftermarket affair - my T30 does not have one .. you need all the room you can get round the turbo. (only thing i did not disturb was alternator area and aircon rad and pipes etc). When you split exhaust from downpipe and lower cast down pipe off turbo you will find you need access from underside - I would recommend remove plate. (re-assembly was even more fiddly - I had to take 5 mins out re-aligning these pipes to Turbo as they r heavy and it drove mad - i'd get it seated on exhaust - then struggle to turbo + vice versa - eventually i conquered tho !)

To the other guys - the whistle was uber pronouced - actually people were looking around for a cop car coming thu as it sounded that loud!

The oil in the intercooler is a sign of a worn Turbo imho, my cooler has not been changed, new turbo has cured the oil drips.

Hope that helps
 

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Hi. I reckon that plate is there to protect the front of exhaust system as it is about 5ins wide and runs roughly down centre of engine. My turbo is making the same noise as yours as the wife says the same as you that it sounds like a police siren when it is accelerating.
 

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Hi Antioch. Can you remember where you got the gaskets from on ebay (shop?). Rang Nissan today and they want £100 + dreaded for a kit which I think is expensive for a few gaskets.
Thanks. Martyn.
 

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Discussion Starter · #17 ·
Hi

Hmmm your plate might be the engine / gearbox member then .. I did not remove this.

I searched on ebay NEW NISSAN X TRAIL PRIMERA ALMERA TURBO GASKET KIT and made the guy an offer.

Turbo active did supply me with a few gaskets but I used the Nissan Kit (comprehensive kit) - it is very good and even includes multitude of spare studs and replacement nuts for all the exhaust manifold, Turbo and downpipe.

Regards
 

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Antioch said:
I searched on ebay NEW NISSAN X TRAIL PRIMERA ALMERA TURBO GASKET KIT and made the guy an offer.

Turbo active did supply me with a few gaskets but I used the Nissan Kit (comprehensive kit) - it is very good and even includes multitude of spare studs and replacement nuts for all the exhaust manifold, Turbo and downpipe.

Regards
Antioch, great read your turbo installation. I'm actually doing this myself tomorrow! I wasnt planning to remove the exhaust manifold though so that's got me worried as I don't have a new gasket for it. Two questions then if I may; do you think you need a new manifold gasket? I.e. what condition was yours in when you removed it? Also how much was the comprehensive Nissan kit please? :)
 
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