Help! Smoke From Exhaust With New Turbo

[R31 POWER]

Sounds to me theres a restriction in the hoses to the catch can. Maybe pull the hoses off the top of the rocker covers and see if it blows smoke. I had the same prob once.

[T04GTR]

ok. thats abit confusing

[T04GTR]

you should leave the inlet manifold one hooked up. (pcv valve)

the turbo side should have the big one from the rocker cover going to it and thats it. simply block the suction pipe hole and leave the little filter on the can.

[T04GTR]

or. to save time do what r31power said. just pull them all of and see if that changes anything

[jazza08]

The T Piece runs to one of the inlets on the catch can. It used ot have two lines to it but then i couldn't have a breather (as the catch can didnt have one built in) so we used the 2nd inlet on the catch can and stuck a breather on that, but i am thinking that doesnt work... lol

Car only blows alot of smoke when you have put ur foot down into boost, on idle its very minimal

[jazza08]

Some smoke comes out the rocker covers but when the catch can system is disconnected the car blows alot less smoke out of the exhaust system...

Im off to buy a decent catch can and see if that helps peeps!

Otherwise i think theres somethin else wrong aswell... maybe an oil drain/inlet problem?

[kwazza11]

I'd have to agree with the rest, That line off to the catch can is probably too restrictive and is causing the crank case to pressurise, when the crank case is pressurised the oil drain backs up and pushes oil out the turbo seals. happened to me when i had a retard attack and tried to use a hose and very restrictive brass air filter for my vent and had the same thing happen with my brand new garrett turbo.

[jazza08]

Ive disconnected one of the lines that runs to the T piece and then to the catch can and the car seems to blow very little smoke now, still abit but about 90% less!

So obviously i need a better catch can set up and ill check the drain lines etc anyway on monday. I should be able to keep off a defect now tho

[T04GTR]

yep. just get bigger hoses to the catch can.

well that was easy

[T04GTR]

you basicly need to hook it up so ideally you would have large catch can with 3 fittings or 2 fittings and a vent.

two fittings for both rocker cover hoses.(the big ones)(plug the pcv valve)

and the thrid to atmosphere or back into the suction pipe

[jazza08]

I will sent two hoses to the catch can and have the breather ontop of the catch can

Im still getting a tiny bit of smoke but im sure after the lines are looked at and the tuning plcae get it we can sort that out!

Thanks for the help so far peeps.

[T04GTR]

no worries.

yeah itl need a good thrash to burn off all the oil in the exhaust

[B-Man]

I don't understand how restrive lines or bad catch can - can cause that much white smoke -

I'm not saying this wasn't the case - just trying to understand the physics behind it - As I had a similar problem with my old car.

[jazza08]

In my case the air intake route was blocked off, so all the bad oils etc have nowhere to go except to the catch can from the head. If the lines are too small or there is a problem with the breather then pressure can build up and force oil out in my case through the turbo's oil seal i believe?

The system needs to be able to expell the gas's and extra oils that build up in the combustion process basically...

[dangerman4]

In my case the air intake route was blocked off, so all the bad oils etc have nowhere to go except to the catch can from the head. If the lines are too small or there is a problem with the breather then pressure can build up and force oil out in my case through the turbo's oil seal i believe?

The system needs to be able to expell the gas's and extra oils that build up in the combustion process basically...

have you taken one of your intercooler pipes of to see if your intercooler is full of oil?

[C_DawG]

Whats this restrictor look like, it is just an 'olive'? I think i have misplaced mine.

[jazza08]

The intercooler had a slight build up of oil but nothing outta the ordinary. The wierd thing was oil got into the boost controllers actuator line! That messed with my controller but i let it out and pulled a line off the block and it runs fine now, i have to keep it like that until i get the new catch can next week because if i hook it back up it'll cause the oil problem again! As it is its not too bad at all.

[C_DawG]

Whats this restrictor look like, it is just an 'olive'? I think i have misplaced mine.

Anyone? Have to reinstall the turbo soon and all I have are the banjos and washes.

[Craved]

restrictors for std ball bearing cores are built into the area you screw the banjo feed into, if there is only a very small feed then its restricted

[jazza08]

Ok i replaced the catch can with a better set up, two lines running to it and it has a built in breather and i still get oil smoke....

Next up i will have the turbo oil line looked at to see if it has a restrictor on it otherwise check the line to the sump isnt blocked.

If its not that then i guess its the turbo oil seal???