just to confirm turbo failure

[ekjdm14]

That sounds a little bit on the worn side, although my experience is quite limited on turbo play but much over 1mm I would call excessive. I suppose if there's no obvious oil leakage it ought to be OK but it's a pain that the turbo is a pig to access as pulling the engine to swap it is something you'd only want to do once. If it was like the smaller HDi & easy to swap I'd have no problem saying chuck it in and see what it does, but in your position I think I'd be seriously inclined to buy a refurbished CHRA and build the "new" housings onto that before pulling the engine out and fitting it all.

[MikeT]

Were you able to eliminate the breather being the cause?

[darbuck]

Hi lads,
I cant see anything wrong with the breathers Mike Ipulled off all the hoses and the ones leading to and from the turbo and the small one on the rocker cover are slick with oil and oil is dripping out of the doseur valve, when I rev the engine with lower hose off she is spitting out plenty of oil I think I am going to just pull the engine and strip it to see how much play is in the original turbo if there is not much between the two. should l send back the used one and try and source a fresher one maybe? . I can pull and refit the engine in about 2 days total so I dont mind doing it too much, but I dont want to end up back at square one with another bad turbo blowing out oil she smells like an old chip Van and not in a good way when she is running which shows she is burning plenty of oil. she does tick over lovely though really smooth. any thoughts:?

[MikeT]

Sorry I'm not familiar enough with your engine but if you can isolate the breather system (into a catch can for instance) temporarily, clean the intakes and go for a drive that will determine where the oil is coming from.

[darbuck]

Oh OK I get what your saying, I will have to conjure a cunning plan to isolate the turbo and the breathers to see if I can see where it is coming from. i have attached a diagram of the breather system any input welcome. as you can see it is a simple enough setup.

[MikeT]

That looks like the air intake post-turbo. The engine breather (oil separator and pcv) system connects to the pre-turbo intake.

[MikeT]

This is my breather outlet circled in red (the cap at the other end of the camshaft cover is the oil filler cap), it connects to the air intake hose which connects the airbox/maf to the turbo intake.

[darbuck]

Hi Mike, thanks for that mine is very similar and that pipe is clear there is no blockage or restrictions that i can see. Do you think i should pull the rocker cover is thhat what you did when yours was giving trouble?

[MikeT]

It's not a blockage or restriction we're trying to diagnose, quite the opposite; the escape of excessive amounts of oil.

[darbuck]

ok I see what you mean I thought you were concerned that a blockage would be causing excess pressure and forcing oil back into the intake. I have a spare one in the shed from when the original engine hydrolocked after a flood. I will swap them out in the morning to see if this is the problem.

[MikeT]

If you could bear with me, I'd like to diagnose the cause first. It sounds like you're taking a scattergun approach;- changing the turbo, an injector, gaskets, camcover etc. It's your car of course and you're obviously chomping at the bit to get stuck in but do you have either a photo or diagram of the camcover-to-air-intake connections? I could be barking up the wrong tree but if it's like mine, we could be onto something.

[darbuck]

Hi Mike, I know the gaskets need to be replaced because they are leaking and one of the injectors has always been iffy so I am just fixing things that have been outstanding in that sense.but yes i am panicking a little bit I will try to be a bit more relaxed sorry Mike.I have attached photos of a rocker cover like mine

[MikeT]

Ah, I did wonder why the injector, especially as you said it was running sweet.

From my point of view, you asked for confirmation the oil was coming from the turbo. If we can eliminate the oil coming from the breather system, I'd oblige. However, if you have the same push-fit connector that is on my engine then I can't, just yet

Pic courtesy of C4owners.org

[MikeT]

If yours is like this, then no, it's not a push fit but uses proper clips.

[darbuck]

Sorry Mike maybe we can help each other what is wrong with yours pipe apart from all the oil of course and what's with the drill. what should I be checking for on the rocker cover. mine is like that so yeah its clips rather than push fit