Synergie 1.9TD = oil in boost pipe?worried

[Harlequin]

hi , was getting a weird noise from the turbo (synergy TD) for the last week I`ve had a look in the boost pipe (to intercooler)

seems theres fresh oil in it oO


next week im planning on taking the intercooler out to clean it - but any idea`s on why or how theres oil in the pipe?

a little worried!

[Old-Guy]

Depends how much. It's normal for a certain amount of oil to end up in the inlet tract on most engines. Hopefully it's just the oil mist that comes from the engine breather - usually downstream of the throttle body on a petrol engine, but between air cleaner and turbo on any TD.

If you really mean fresh (as in clean) oil then there probably is something to worry about, but implies that the oil has just been changed. Could the engine have been overfilled? Where is the oil level on the dip-stick now?

[Harlequin]

below the max line - oil was changed back in December (next change due in june)

its in the pipe which leads to the intercooler

[Old-Guy]

below the max line - oil was changed back in December (next change due in june)

its in the pipe which leads to the intercooler

I'm guessing this is the low point of the inlet system so any oil in the air-inlet system tends to accumulate their. Oil could be leaking past the seal in the turbo-charger, but they tend to fail in a big way and as a result of the turbo bearing failing - oil pouring into inlet tract. The crank-case breather is the likely source; I bet if you were to look in the pipe leading to the turbo-charger compressor, there would be oil there too.

[Harlequin]

pulling the bumper off next week and cleaning the intercooler , then likely work backwards


any point putting an afertmarket intercooler on these?

[Harlequin]

got a soud underboost that's not the usual `whistle`.... somewhat worried

[Harlequin]

a little bump - its losing oil now.


ok engine is quite `wet` under neath , its dry above the top of the turbo , but wet underneath - no loss of boost , but a loud whistle under full boost.


somewhat concerned now ; thinking it could be turbo - maybe compression side as theres plenty of oil in air pipes.


any idea`s? how much does it cost to recon a turbo?

[Stewart(oily)]

Every TD motor I have worked on or owned, and thats a good few has been very oily in the entire inlet tract, when I first spotted it I feared drastic things but in fact they just "all do that sir."
I would be more keen to eliminate the oil leak though, if your turbo is failing you will have great clouds of oily white smoke billowing out of the exhaust and galloping oil consumption, the general oilyness on the underside of the engine is a part of the Citroen anti corrosion system

[Stewart(oily)]

Re the whistle, check for boost leaks and then enjoy my last two have been whistlers, the current HDI sounds like knight rider

[Harlequin]

LOL!

thank you that did make me giggle
my concern is a failing turbo but its not massively smoking (well only so much as any smoker ) it is the oil in the general area ; no symptoms of headgasket (and my thought is the turbo area)


although - it is quite tight there.

no boost leak afaik - starts pulling from 1500 , and goes like a train above 2000ish (awesome on a cold day) all over by 3500 though - just noise and smoke

[Stewart(oily)]

Oil from most engine leaks seems to end up around the back of the engine, rocker covers are pretty good at leaking, so can the vac pump,even the oil cooler can join in.
I would be more concerned about leaking seals at the belt end and possible contamination.

[daviemck2006]

My expert hdi burst the intercooler intake (i think) pipe last week. A previous fiat ulyssee burst the same pipe a few years ago. Both of them had oil in that pipe and sprayed it all over the underneath of the engine, all the way to the back of it. None of them used any oil to speak of, never needing topping up. It is PSA's design of extra rustproofing!