Technical stilo 1.9 jtd oil in maf

[Argonought]

No. The EGR when open vents the inlet manifold to the exhaust pipe so the pressure created by the turbo is lost out the exhaust pipe. The turbo is still working normally.

Are you sure as that description seems a little odd to me :chin: Based on eLearn, the EGR vents exhaust flow to manifold PRE-turbo and as a consequence the turbo struggles to spin (as already described). You can't have the cart before the horse. Without a spinning turbo you wont have much manifold pressure to worry about

The rocker cover breather pipe enters the inlet just before the turbo and just after the MAF. It can not enter the high pressure pipes after the turbo.

Agreed - but is that not what I just said

No it wont be suffering from wear.

If it's not worn then you have to account for the high accumulations of oil.

I thought this thread had already indicated a little oil is normal in this area - but surely that's not the same as saying large quantities are normal too.

...and if it is normal then WHY the big difference?

 

[john55]

I do not believe he has a high accumulation of oil in the inlet.

His car is behaving exactly as mine does (with sticking/ slow EGR that I have cleaned twice, but never got round to replacing)

Hesitation at around 70MPH that goes when you put your foot down (EGR closes)

Oil splashed on MAF.

Black Smoke (not blue / grey which is oil) on acceleration. He has still not told us what colour the smoke is but I suspect it is black.

 

[Davenorth]

Hi I have taken off the turbo and there is **** loads of oil in the pipework even in the exhaust. The cat is contaminated and the smoke was grey and there was **** loads of it. I have sent the turbo off for refurb £180 +VAT and I am now in the process of taking all the pipework and intercooler off to clean all the oil out. I'm not sure I'll take the inlet manifold off though as it looks really complicated just try and clean it out with a rag and wire. Can I clean the cat out with solvent? and blow through with compressed air? I find it strange that the turbo has gone as well as its only done 60k and has a service history. If you can offer any more advice I'd be grateful.
Regards
Dave

 

[john55]

Sounds conclusive then. I didnt know how much smoke you were getting or what colour it was. but that is definate turbo failure.
My turbo did the same at 100K miles. 60K seems very early, unless it was driven very hard and then switched off all the time. It is good practise to drive gently / let the car idle a few minutes after driving it fast to allow the turbo to cool down before stopping the engine.

Dont worry about cleaning the cat or exhaust. It will soon clear out after driving for a bit. You may get some smoke , especially when hot, for a while after changing the turbo but that is just oil in the exhaust burning off.

Dont need to clean the inlet manifold as it naturally drains down into the cylinders anyway, but do drain the oil out of the intercooler and wash it through with white spirit. Did any pieces break off the turbo blades, if so they could still be lodged in the oily mess in the intercooler pipes, ready to get sucked into the engine when it next warms up.

 

[Davenorth]

Thanx for all your advice mate should have turbo back Friday I am cleaning the pipes and intercooler now ready for rebuild.

 

[Davenorth]

Hi Back again and the report back from the turbo people was that the oil seals were not gone and that the turbo was full of oil. Could this have carried over from the engine breather pipe that comes down to the pipe before the turbo? I can't see where else it could have come from. Any ideas?

 

[B3NNETT]

Hi Back again and the report back from the turbo people was that the oil seals were not gone and that the turbo was full of oil. Could this have carried over from the engine breather pipe that comes down to the pipe before the turbo? I can't see where else it could have come from. Any ideas?

its possible but if that much oil is coming through the breather pipe there has to be something seriously wrong somwhere,
cant think of anywhere else it could be coming from but i'm sure there could be another possibility.

how about talking the rocker cover of and having a look to see if theres anything in there,
post pics if its possible so we know what we're looking at.

 

[Argonought]

The vapour trap is on the underside of the air-filter and (conveniently ) often parts company with it (which means you don't need to remove the air box at all).

You may find it's full of oil.

Oil can only arrive from the turbo and, as you say, from the breather pipe but there's no way for it to come from the air box.

Hi Back again and the report back from the turbo people was that the oil seals were not gone and that the turbo was full of oil. Could this have carried over from the engine breather pipe that comes down to the pipe before the turbo? I can't see where else it could have come from. Any ideas?

Checked that vapour trap yet?

 

[Davenorth]

what should i be checking it for

 

[Argonought]

If it's full of oil then it obviously isn't going to work!

and any excess will head towards the turbo

 

[sussexa]

heres a pic of mine if it helps.

i used a degreaser and a rag round a screwdriver or hacksaw blade to mop out what i could

 

[Davenorth]

Hi back again. I would like to thank all that have helped in this thread especially ABZSTILLO, B3NNET, Argonought and John55.

The turbo returned and the report was that the seals had not gone but that the vanes and the turbo were gummed up with oil that had carried over. I checked the oil trap and yes it was full of oil that was cleaned out as were all the pipes and intercooler when the new turbo was fitted. There is still some oil coming down the engine breather pipe and it is finding its way on to the MAF but only a little bit but enough to cause it to malfunction. I think I will fit an oil catching system in the engine breather pipe and take off the breather pipe to the air intake just before the turbo. The car runs fine now apart from the occasional oil on MAF. I stripped down and cleaned the EGR when I had all of the pipework off but I don't know how to check its operation. When I stripped it there was a lot of loose carbon in it which I removed. The valve operated ok moving backwards and forwards but couldn't check the solenoid operation. I don't have any smoke or hesitancy now when driving in fact it goes really well. So all is well? I have learnt a lot in this journey one is even though the car has a service history doesn't mean it has been looked after.

Regards Dave

 

[B3NNETT]

good news that ther cars working fine again.

the EGR solenoid should have a pin coming out that pushes the actual valve. you should be able to push this in easily with one finger. but doesnt sound like you have a problem with it anyway.

 

[B3NNETT]

had my gsr off on sunday to refit the MAF in, and in comparison to the original pipework there was no oil in the gsr,
not sure if its anything to do with the fact that its taken the oil catch out of the equation as it doesnt have one lol, but i take this as a result

 

[Argonought]

not sure if its anything to do with the fact that its taken the oil catch out of the equation as it doesnt have one lol, but i take this as a result

Just consider yourself lucky

For a clean MAF it's best to keep the induction as close to oem as possible (which should include preventative maintenance).

I've never had a problem with mine and I've no hesitation in red lining it either :devil: