[jockdeeznutz]

I have a ST DOC 6466 N54. Been running fine until the turbo started smoking while WOT. But there is no smoking when driving normal. The smoke is coming right under the turbo blanket. It smells like burning oil but there is no oil leak from the feed line or the drain. Several people also have told me there is a blue smoke coming from the exhaust when I'm WOT. I checked the exhaust and when I wiped it with a towel there is oil residue.

The car has no codes, no loss of power, and drives just fine otherwise. Is my turbo going bad or needs new seals? Crankcase pressure problem? Or is my PCV/Valve cover clogged? I have 120k miles on the motor. I've done the valve cover gasket about 20k miles ago but it does have the original valve cover. Any suggestions? Any help will be appreciated Thanks!

[iqraceworks]

So the smoke is coming from under the turbo blanket....AND coming out of the exhaust? And it just started doing it? Sounds like a leaking seal(s).

If it was me, I would send the turbo off to be checked out and given a clean bill of health.

[jockdeeznutz]

Yeah, I figure I’d do that. What are the chances it might be my PCV/ Valve Cover clogged? I sent
my turbo last year to get new seals so kinda hesistant that its the turbo. Thanks

[iqraceworks]

Do you have an oil catch can installed? If not you could always try that and see what happens?

[trb1]

My 6062 has been smoking and drinking oil since I put it on. Idk if it’s pcv or seal related. New valve cover, and metal pcv valve though. Kind of annoying. Quart every 1k

[iqraceworks]

Originally Posted by trb1

My 6062 has been smoking and drinking oil since I put it on. Idk if it’s pcv or seal related. New valve cover, and metal pcv valve though. Kind of annoying. Quart every 1k

Do you have a catch can installed? That's a ton of oil! Why not fix the problem?

[trb1]

Originally Posted by iqraceworks

Do you have a catch can installed? That's a ton of oil! Why not fix the problem?

Have a high side kit that Vents to atmosphere now. Oil consumption is rather common on ST cars from what I’ve gathered. I’m sure it’s a pcv issue. Especially since my consumption is based off of how much I get into boost. I’m just not convinced on the route to take to fix it.

[iqraceworks]

You should put a catch can on the low pressure side....just to see if that helps. But one of those cheap $45 ebay kits... can't hurt.

[mweisdorfer]

Originally Posted by jockdeeznutz

I have a ST DOC 6466 N54. Been running fine until the turbo started smoking while WOT. But there is no smoking when driving normal. The smoke is coming right under the turbo blanket. It smells like burning oil but there is no oil leak from the feed line or the drain. Several people also have told me there is a blue smoke coming from the exhaust when I'm WOT. I checked the exhaust and when I wiped it with a towel there is oil residue.

The car has no codes, no loss of power, and drives just fine otherwise. Is my turbo going bad or needs new seals? Crankcase pressure problem? Or is my PCV/Valve cover clogged? I have 120k miles on the motor. I've done the valve cover gasket about 20k miles ago but it does have the original valve cover. Any suggestions? Any help will be appreciated Thanks!

1) do a walnut blast on your intake valves

2) Install a BMS catch can & RB PCV valve & Cap.

3) Then report back.

[jockdeeznutz]

I have a BMS OCC/ RB PCV Val. I did a walnut blast about 40k
miles ago.

[trb1]

I’m convinced it’s because the high side loses its vacuum source since there’s no inlet nipple anymore. Especially since how much oil I burn correlates with how much i get into boost.

[mweisdorfer]

Originally Posted by jockdeeznutz

I have a BMS OCC/ RB PCV Val. I did a walnut blast about 40k
miles ago.

The PCV valve is good for another 10k. Your intake valves are all carboned up again - 100% guaranteed on your intake valves. An intake cleaning is only good for 30 to 36,000 miles.

Here's mine at about 26-28,000 miles at best.

Is this causing your blue smoke at WOT? Idk

Blue smoke at startup is caused by leaking valve seals.

[jockdeeznutz]

I removed my valve cover and everything was fine. So I went ahead and replaced my VC and Gasket. I’ll remove my intake manifold and take a peak. My mechanic is also telling me its probably my intake valves. It only smokes when i’m WOT.

[trb1]

Has anyone discussed a bent rod or ringland issues?

[mweisdorfer]

Originally Posted by trb1

Has anyone discussed a bent rod or ringland issues?

No, because the internals in the N54 are very stout

[mweisdorfer]

Originally Posted by iqraceworks

You should put a catch can on the low pressure side....just to see if that helps. But one of those cheap $45 ebay kits... can't hurt.

Mishimoto makes the best catch can for the low side due to the type of filter they use

[trb1]

Originally Posted by mweisdorfer

No, because the internals in the N54 are very stout

Lol.

Might want to look into slightly bent rods and how they can cause oil consumption issues. Ring land issues aren’t unheard of either.

Both are hard to diagnose.

The n54 not having bottom end issues is kind of like the rod bearing issue. People are just in denial.

https://www.n54tech.com/forums/showthread.php?t=32981

[Saif2018]

Originally Posted by trb1

Lol.

Might want to look into slightly bent rods and how they can cause oil consumption issues. Ring land issues aren’t unheard of either.

Both are hard to diagnose.

The n54 not having bottom end issues is kind of like the rod bearing issue. People are just in denial.

https://www.n54tech.com/forums/showthread.php?t=32981

Rod bearings and bent rods are not common issues on a N54, can it happen? Yes. A lot of it likely due to drivers not warming up the car properly or pushing the engine too hard.

[trb1]

Originally Posted by Saif2018

Rod bearings and bent rods are not common issues on a N54, can it happen? Yes. A lot of it likely due to drivers not warming up the car properly or pushing the engine too hard.

I disagree.

[iqraceworks]

Originally Posted by trb1

I disagree.

So many facts and details....

[trb1]

Originally Posted by iqraceworks

So many facts and details....

https://www.e90post.com/forums/showthread.php?t=1737521

Shit injectors leads to shit oil, leads to bad time with bearings. Idk why this is the only forum that lives in denial.

They don’t happen to every n54, but it’s substantially more common than people are willing to admit. All 3 I’ve pulled apart have had copper showing. 2 were sub 100k.

[iqraceworks]

Originally Posted by trb1

https://www.e90post.com/forums/showthread.php?t=1737521

Shit injectors leads to shit oil, leads to bad time with bearings. Idk why this is the only forum that lives in denial.

They don’t happen to every n54, but it’s substantially more common than people are willing to admit. All 3 I’ve pulled apart have had copper showing. 2 were sub 100k.

So what you are saying is that it has nothing to do with the N54 itself.....but has everything to do with the guys who don't stay on top of maintenance and decide to keep driving on leaky injector(s) because they are too cheap to replace them? And on top of that, they probably don't change their oil often enough either. All leading up to worn rod bearings...

Yeah... definitely an N54 issue.