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Leebeemee

CDI turbo leak

11 posts in this topic

New here because im fried 

2010 smart cdi 54bhp DPF passion.

 

1, Turbo solenoid failed (replaced)

2. DPF clogged (cleaned) 

3. Noticed a lot of oil around cross member under the turbo.

4. Pipes off and full of oil.

5. Rebuild turbo and still leaked.

6. New cartridge ready assembled and still leaked.

7. Checked turbo oil drain, its clear.

8. This is the unusual part. If i leave the outlet pipe ( from compressor to intercooler) off, it doesn't or barely leaks oil. If I put ot back on, instant oil in the pipes and compressor snail.

8. Crank breather from the cam/head is clear.

9. Oil level was high, i think from injectors leaking. (new seals to be installed)

 

It just wont stop leaking under normal conditions. 

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What does it do if you leave the oil filler cap off or the dipstick out?

 

It sounds as though the crankcase is being pressurised. If so then it should not leak with the oil filler off or the dipstick removed. It will make less mess with the dipstick out.

 

I have had three and they will all increase the level on the dipstick if you only use short journeys and leave it ticking over for long periods.

 

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Have you taken off the valve cover and taken the two parts apart to see if it's clogged up deep inside as my 450 was, that is IF the valve covers are the same...? Just a thought? 
What seal in the injectors are you speaking of when saying injectors are leaking? Leaking injectors send fuel into the cylinders and past the rings to fill oil pan with fuel right? OR are you speaking of the copper base seals when installing injectors after removing them? If they are leaking it causes that black death mess that siezes the injector into the head, correct?  I'm just curious not saying how to solve the issue.

 

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By the way, welcome to the site, hope we can help solve your problem.

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Thanks for the welcome guys.

Im going to check the pressure now and see if it comes out the dipstick or cap.

 

I was told the injectors could be leaking down into the cylinders and filling up the sump or failed regens did the same.

Yes...... I did lots of short journeys, i now known to run them longer for no reason.

Valve cover will be my last check. 

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With the breather pipe off the intake i see a good amount of chuffing vapor and out the turbo when connected back together.

I kinda think it too much vapor as it stinks and hurts my eyes after a while.

Seems to be pressure related as i see no more issues anywhere else

 

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Nope, cap and dipstick out. No blow, smoke or push or pull, it all comes out the breather pipe only.

Still leaking oil.

Wonder if the turbo is not installed correctly 

 

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I would not suspect the turbo. If a turbo leaks it makes smoke like you would not believe. Enough to obscure everythign behind you and leave a trail of crashed cars. It will empty the sump in a minute or two.

I reckon it is your piston rings and you need to do a compression test. The only reservation I have about that is the way it stops leaking without the intercooler connected because the increase in pressure in the cylinders is minimal.

I cannot think of any other way for pressure to get into the crankcase other than the normal rings or valve stem oil seals / valve guides. You could perhaps investigate the stem seals first.

It is probably possible to do the stem seals without removing the head if you are careful.

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Have you done a leak back test on the injectors yet? It's easy so to speak and will let you know if you have a leaky injector, many youtube videos showing you how.  Just some clear hose on the fittings on the top of the injectors into a water bottle and run it for a few minutes to see if one bottle gets more than the others, They should all be equal if the world is right...lol.  
You can see your valve stems from inside the exhaust manifold or ports . The intakes welll...????   Yes you can replace the valve stem seals without removing the head, but it isn't easy without removing the engine from the subframe as you need to get the cam etc all out and that means taking off the front cover and there isn't enough space to get it out, or at least I've never found enough space...lol.

 

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Thanks guys 

1. I think im gonna take the turbo off and put it back carefully so i know im 100% certain its installed correctly.

2. I will take the intake off and watch through the inlet of the Turbo while the pipe is connected and see whats happening. (Better view of oil leak)

3. Compression test (through the glow plug is suspect????)

After that its the stems and rings. I hope not.

4. Yes agreed. The moment the pipe is connected its obviously sucking oil straight past the Bearings as the pull from the engine sucks it out. 

Surely i could put another crank breather in or a fan sucking it out to decrease pressure and the leak would stop? 

Or is it a case if the oil drain is pressurized too much? 

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Posted (edited) · Report post

https://youtube.com/shorts/mob4VK_EB7w?feature=shared.  

Here is a video i did today.

Does the amount of gases escaping the breather look too much??? Could that be engine fumes? 

Why is nothing escaping from the dip stick or oil cap????

Nothing at all.

I will add this. Because you cant blank off the EGR completely with getting a code, i made a plate and drilled a 10mm hole in it to allow some EGR gas through but not get a fault code. It works.

Could that cause pressure.? 

 

 

 

Edited by Leebeemee
Missing information

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