Alright.. as some of you may know my car has been smoking from the drivers side. It's more or a white with a hint of blue colour.

Knowingly blue is oil so I have deleted the PCV valves and plumed It all up to a catch can.

The car is still smoking but could this be left over oil from the PCV valves?

Hoping this will fix it as I will struggle to afford turbo seals or piston rings etc...

So my question is... how long if it was the PCV valves take for the smoke to subside?

Thankyou

[video=youtube_share;vuk0EAxkU_g]https://youtu.be/vuk0EAxkU_g

Is there a local band playing or is that your car sounding like a drum kit?

Is there a local band playing or is that your car sounding like a drum kit?

 

Yeah the car haha. It's the cas

Looks like a failed turbo to me never mind the pcv valve.

I take it your exhaust has no X or H pipe? Looks like a failed rear turbo seal. When did it start?

 

Seems Jimmer beat me to the punch there. Good to see he agrees though.

Great minds Stephen and all that :thumbup:

I wouldn't go that far, just spent 8 years keeping a pain in the ass red car running. A great mind would sell it :lol:

Yeah thanks for reply guys. And no I don't have a x pipe of anything.

I take it your exhaust has no X or H pipe? Looks like a failed rear turbo seal. When did it start?

 

Seems Jimmer beat me to the punch there. Good to see he agrees though.

 

Didn't start that long ago really. About a month ago. All of a sudden came on. Only comes on at idle and when you rev it but when your driving around there is no smoke. Even on boost. No smoke from what I can see

Forget my last comment. Smokes on boost and I think it has had it now. Even smoking in the engine bay from the drivers side.down where I can't see so I recon turbos aha

So...I'm not saying this will help. Any of it but there are some things you can consider before crying about the labour and parts bill. Firstly what you need to understand is oil is being evaporated, not burned as it drops from the rear of the turbo into the exhaust. That's why it's grey, not blue. Secondly the oil is passing here because it's the easiest path. The lowest pressure is your exhaust, not as it should be one engines sump. Even a worn seal can be prevented from leaking with the right amendments.

First up, do a compression test. Excessive blow by from a worn engine could be the cause and even replacing the turbo would be a waste of time and money.

Secondly why did you delete your PCV system? Not only is it there for emissions but it's there to scavenge the oil galleries and dump creating negative pressure. This helps the oil make its way where it should go. In the front pipes, the ones from the cam covers to the accordion pipes, is a brass restriction. This limits the air coming in and drops the pressure. Check the crank case pressure with a boost gauge hooked to the dip stick. Removing the system has hopefully left you with zero pressure but that's still higher than -5 or whatever. You could of actually made things worse. A common trick is to fit a nonreturn valve in that front pipe, drastically lowering crank case pressure.

Thirdly, in the stock exhaust there are multiple restrictions that cause back pressure, there is also a link that balances the exhaust known as a H pipe. A free flowing exhaust takes away that back pressure in the pursuit of back pressure. You see where I'm going an exhaust with lower pressure than the crank case equals leak. There is also a school of thought that a separated system like yours with no H or X is disbalanced and the exhaust pulses suck oil from the turbo, anecdotal evidence is out there that installation of a balancing link will stop the smoke.

I'm not saying for one minute do one or all of these and your problems will disappear but without considering these things a new turbo at great expense may see you no further forward. You need a why. I'd hate to see you throw four figures to fix a problem that doesn't exist.

So...I'm not saying this will help. Any of it but there are some things you can consider before crying about the labour and parts bill. Firstly what you need to understand is oil is being evaporated, not burned as it drops from the rear of the turbo into the exhaust. That's why it's grey, not blue. Secondly the oil is passing here because it's the easiest path. The lowest pressure is your exhaust, not as it should be one engines sump. Even a worn seal can be prevented from leaking with the right amendments.

First up, do a compression test. Excessive blow by from a worn engine could be the cause and even replacing the turbo would be a waste of time and money.

Secondly why did you delete your PCV system? Not only is it there for emissions but it's there to scavenge the oil galleries and dump creating negative pressure. This helps the oil make its way where it should go. In the front pipes, the ones from the cam covers to the accordion pipes, is a brass restriction. This limits the air coming in and drops the pressure. Check the crank case pressure with a boost gauge hooked to the dip stick. Removing the system has hopefully left you with zero pressure but that's still higher than -5 or whatever. You could of actually made things worse. A common trick is to fit a nonreturn valve in that front pipe, drastically lowering crank case pressure.

Thirdly, in the stock exhaust there are multiple restrictions that cause back pressure, there is also a link that balances the exhaust known as a H pipe. A free flowing exhaust takes away that back pressure in the pursuit of back pressure. You see where I'm going an exhaust with lower pressure than the crank case equals leak. There is also a school of thought that a separated system like yours with no H or X is disbalanced and the exhaust pulses suck oil from the turbo, anecdotal evidence is out there that installation of a balancing link will stop the smoke.

I'm not saying for one minute do one or all of these and your problems will disappear but without considering these things a new turbo at great expense may see you no further forward. You need a why. I'd hate to see you throw four figures to fix a problem that doesn't exist.

 

So good info there mate I got rid of the PCV and put a catch can in. Just to test will it be ideal if I somehow connect the 2 back boxes with a temporary pipe so it goes to 1 exit. Would that help to see if the smoke would stop?

You can but try, however I don't think it's the most likely fix. I'd ditch the catch can set up and refit a properly functioning PCV system first and foremost. I'd do a compression test to, just to isolate that from the scenario. I know plenty of people have used catch cans and astomspheric vents but personally my engine didn't like it and smoked. Refitting it resolved my issue.