Trying To Avoid 1.6HDI Turbo Failure

[Hell Razor5543]

Each section of the forum usually shows the post with the most recent reply first, and then the next most recent post/reply, etc. Normally there is a maximum of 30 posts per page (posts themselves have a limit of 15 per page), with the ability to go onto the next pages.

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Hope this helps. Welcome to the French Car Forum.

James

[1275jstrap]

cheers James.

[1275jstrap]

I'm so full of help how do i find where to give it i know all about pdf systems and all diagnostics with Citroens and Peugeot. sorry to be A nagging fool.

[1275jstrap]

if anyone needs any more personal one to one advice on this give us a call @ richard dalton dalton independent Citroen peugeot specialist stoke 01782 563233

[1275jstrap]

sorry for the work pitch but we are good lol and we try to please all and do the best job we can and i personally will always be on this forum to do all i can to help you all diyers to fix it.

[oneday]

nice to know we have another one with knowledge on here

[1275jstrap]

ok

[Timmy69]

I dont know if this is real but it is what i got told by an engineer at the bus depot where i work...after driving a turbo driven car it is best to give it a minute on tickover to let it settle before switching off..I know its the case of buses which i know do a lot of milage per day but i have got into the habit of just waiting a minute just to let it settle..Probably someone telling me a load of crap but it can't hurt can it
Timmy

[mooseshaver]

I leave all my turbo cars running for up to 30 seconds before switch off. The newer c5 if the oil temp is on 7 blobs I wait until it drops to 6.
I think it's to stop the oil cooking on the hot turbo once engine is off and not pumping oil

[wideboyno1]

I dont know if this is real but it is what i got told by an engineer at the bus depot where i work...after driving a turbo driven car it is best to give it a minute on tickover to let it settle before switching off

Thought it was just me that did that!

Having had a few ****ockings from the head engineer over the course of a few years driving buses for Arriva and back to Midland Red I do exactly that with my car now too.Do get some strange looks from the neighbours sometimes when i'm just sitting there for a min or 2 in the car doing nothing.

[Chlorate]

The purpose of letting the car idle for a moment before switching off isn't just for oil temperature reasons. The main reason is to allow the turbo to stop spinning - turbochargers are supported on hydrodynamic bearings and rely on oil pressure to keep the journal from touching another metal surface. So if you pull up, park and immediately switch the engine off - the turbocharger could still be spinning at tens of thousands of rpm - but since there is no oil pressure the bearing will just grind up against metal, which (of course) accelerate wear.

Alex

[BigBadBob]

Hi there all I am new here and I have 15 years Citroen experiance so I would love to help you all.
All DV6 (1.6hdi) engine turbo failures I have seen have been caused by injector carbon leakage due to the injector bolts being loose, Not sure why they come loose possible heat cycles of the copper washers not sure. Anyway if you have a DV6 engine check your injector securing bolts tomorrow I guarantee you they will be loose. I have done best part of 40 turbos on these engines and to all my customers I recommend a full engine strip down and clean because the carbon (looks like coal) leaks from the combustion chamber up the injector tube and destroys the little seal between the cylinder head and the cam housing, It then goes down into the engine just where the valve springs are which smash it up and mix it with the oil. It then makes a real mess of the oil and blocks the stupid little filter on the turbo feed pipe on the banjo and starves the turbo of oil and "goodbye turbo." Fitting a new turbo will not last long i've seen a car come to me which has had 4 turbos and I'm sorry to say if you have this problem the only real permanent fix is to strip the engine' remove the injectors,cam housing,oil filter housing,sump,oil pickup in the sump,oil feed pipe,oil pump and cleanwithin an inch of their lives, Personally I would do the injectors first as they can be a real pain to remove as the carbon can sieze them in solid (ps the carbon softens to a treacle when very hot so the injector removal is best when the engine it super hot and I mean super hot) we leave them running for at least 4hrs at work. Anything i have missed let me know and I will fill in the blanks. PS you will need to recut the injector seal mounting faces in the head as when they leak combustion the leak cuts grooves in the seating faces and the new injector seals will not seal.

Thanks for this information - you've been really helpful. And what an excellent forum. Would you say that tightening them on each oil change, is sufficient to keep on top of the problem? Is there not a better solution - such as using spring washers - to avoid them loosening?

[Mandrake]

When you registered did you enter your email address.. you should get an auto response to any replies ... check your spam box for topic subscription replies...

Maybe its a preference setting but I only get email notifications of new posts if I click on the small icon near the top right of the thread that looks like two pages with a green plus sign...

Another tip is the "view your posts link" at the top that shows all threads you've posted in...

[1275jstrap]

Just as an extra input to this post, I have had a picasso in today with no injector leakage and its turbo well gone and it turns out the car has not had a service for 3 yaers and the last service was done at halfords! and the car is 17.4k overdue a service. The oil in this car is like treacle and the oil filter is more blocked than i have ever seen before. Anyway my point is oil changes are important and oil quality is important aswell. Do not let anyone put cheap oil it this engine as with most modern engines they are critical to oil quality and the costs to put things right after is a lot greater than the cost for a good quality oil change. Oh and just as a quick ps all garages that offer a cheap service for eg 69.99 etc they are putting s+it oil in even dealers>>> I have worked for a fue who do it and they don't care.

[1275jstrap]

Sorry to all i seem to have missed a fue of these replies on this thread. I think it is a REALLY IMPORTANT service item on this engine to check and tighten the injector securing allen key bolts at least every service. If you cannot do it yourself ask your garrage to do it, It only takes 2 mins.