white smoke problems n54 need opinions!!

[Tsugo]

Hey guys so im kinda stuck with where to go with this now and need fresh ideas.

My car has been blowing thin white smoke for the past 5-6 months usually see it in deceleration. I have the following mods and covered maintenence:

Maintanence:
Newest injectors, hfpf, coilpacks and plugs all genuine. I use 0w40 castrol oil changed @5000kms

Mods:
Jb4 computer
Vargas stage 1 turbos ( done 2 weeks ago)
Er intercooler
Miltek exhaust
Catless ar dp
Bms dual cone intake

The car doesnt run rough at all and pulls very well. Car only has 60,000kms on the clock and im all out of ideas. Anybody got some fresh ideas where to look? It would be muchly appreciated!

[mistawall]

might be oil burning from the turbos? no idea

[BRR]

Originally Posted by Tsugo

Hey guys so im kinda stuck with where to go with this now and need fresh ideas.

My car has been blowing thin white smoke for the past 5-6 months usually see it in deceleration. I have the following mods and covered maintenence:

Maintanence:
Newest injectors, hfpf, coilpacks and plugs all genuine. I use 0w40 castrol oil changed @5000kms

Mods:
Jb4 computer
Vargas stage 1 turbos ( done 2 weeks ago)
Er intercooler
Miltek exhaust
Catless ar dp
Bms dual cone intake

The car doesnt run rough at all and pulls very well. Car only has 60,000kms on the clock and im all out of ideas. Anybody got some fresh ideas where to look? It would be muchly appreciated!

Most likely its the turbo seals failing. Could be many other things but this seems to be common and it did happen to me.

[MaDoNiOn]

Oil burning from turbo's my guess too.
Did you retune after you changed to the new turbo?

The reason why i say this is my friend just did a strait pipe on his mazda mps and about 2 hours later his car started blowing smoke out like crazy and he said they need to tune it because now the turbo is leaking oil from not being correctly tuned because of the strait pipe.

Dunno if it helps.

[Hellkite]

0w40 is to thin. Use at least 5w40. Second you are due for a valve cover. There are ports in the head that port to the intake runners and the only thing that separates the oil pulling into the intake is the valve cover gasket. Plus there is 3 valves in the valve cover itself pcv boost and vacuum. Under vacuum the positive blow by goes threw the vacuum valve and under boost it goes threw the boost valve.
You can try the gasket and the pcv but it's worth it the change the whole valve cover. You are do to change it any way.
It is very possible you are pulling oil threw the port,pcv, or the the vacuum valve is bad in the valve cover. Another possibility is your oil drains on the turbos are kinked ( check that). Worst 2 cases valve stem seals or to much blow by. I'm going threw this myself this is what I learned.

[x99percent]

Originally Posted by Hellkite

0w40 is to thin. Use at least 5w40.

Trick question:

At operating temperature, which is "thicker"... 0W40 or 5W40 ?

[Hellkite]

They should be the same. The running weight in both oils is 40.
But ever feel 0 weight oil it feels like cooking oil. Plus it's not recommended for our engines. Plus there is virtually no zinc in 0 weight oil. In my opinion 0 weight oil only belongs in engines with shut down technology.

[x99percent]

Originally Posted by Hellkite

They should be the same. The running weight in both oils is 40.
But ever feel 0 weight oil it feels like cooking oil. Plus it's not recommended for our engines. Plus there is virtually no zinc in 0 weight oil. In my opinion 0 weight oil only belongs in engines with shut down technology.

A cold 0-weight is still thicker than a 40-weight at operating temperature. Just clearing up some common misconceptions about engine oil.

[Tsugo]

I appreciate all your replies! So the oil lines are definately not kinked or leaking oil! I have a feeling it might be because of the top end breathing. The valve cover is definately a good idea im going to take it to a local specialist and see if they can determine it. Its way past my area of expertise with these motors

Might install an occ too?

[bippie999]

my car had lots of white smoke and bad smell after i put in a new cat-less mid-pipe. It was okay earlier after i put in a cat-less down-pipe. Tried everything in the book, no luck. finally I put back the OEM mid-pipe w secondary cats and ALL THE SMOKE and smell went away!

[Hellkite]

Originally Posted by bippie999

my car had lots of white smoke and bad smell after i put in a new cat-less mid-pipe. It was okay earlier after i put in a cat-less down-pipe. Tried everything in the book, no luck. finally I put back the OEM mid-pipe w secondary cats and ALL THE SMOKE and smell went away!

I herd putting cats back I it works most of the time

[darkrom]

Originally Posted by Hellkite

I herd putting cats back I it works most of the time

This masks the problem. Now whatever is still causing the white smoke is still happening. So you can bury your head in the sand, or find the problem, which it sounds like turbo seals going bad. Got my turbos being replaced right now for the same shit at 62k.

[Hellkite]

Originally Posted by darkrom

This masks the problem. Now whatever is still causing the white smoke is still happening. So you can bury your head in the sand, or find the problem, which it sounds like turbo seals going bad. Got my turbos being replaced right now for the same shit at 62k.

Anoth theory is that when you put the cats in it restricts the air flow and stop the valve stem seals from leaking. So it not masking a problem. It's changing the air flow dynamics. Because if a gluons who went threw this like me notices oil consumption stops. At one point I was loosing a quart every 200 miles. With the cats in no more oil consumption. I am working with Rob from RB turbo to fix this problem. Most of the time it's not the turbos. Some cases yes. But if you look out there many people with new turbos go catless and have the problem. One of two things are happening one valve stem seals are leaking or two the pcv is over taxed for some reason.

[Tsugo]

just an update guys.. ofh gasket was leaking so fixing that up and resuming on monday to sus out any other leaks and to see if that solves anything. I'm seriously considering putting stock dp with cats back on just to see if that fixes any of the issues.. i literally have just had the turbos redone so i doubt its the seals.. but if it is then im not going to be a happy chappy.

[bippie999]

i have also noticed i'm burning a lot more oil since i removed the main Downpipe cats, but I still have the secondary cats welding into my SuperSprint Mid-pipes, so no more white smoke!

[Tsugo]

I have an update! so it was a dodgy install!.. o rings on the oil feed and oil drain lines were in fact leaking and causing majority of the smoke. the other oil leak was something to do with cam cover gasket!

zero smoke now

[Albertn55]

so I got a motor swap about 8k miles ago(got it with 110k miles with new gaskets and then drove about 8k miles) had ngk plugs and coils from my old motor that only had about 1k miles, used my same fuel injectors cuz they were still good, bought some used turbos with 8k miles and they seemed fine no signs of leaks got them out on as well. it seems like I'm pushing a lot of power! so I don't believe my turbo seals are bad. boosts really strong. current mods I have are
chargepipe with bov, catless downpipes, ngk 2 steps colder plugs and coils.
secondary cats deleted and muffler deleted.
I don't have a tune and haven't had one since I've put on my little upgrades I did
I'll post a screenshot of the codes I have from the free scan tool I use on mhd. I drive about 100-150 miles everyday
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[Aode06]

Run 1 quart low, the meter should be near the middle but not full zone. Thats what works best for catless BMWs .
Enjoy

[wheela]

Originally Posted by Aode06

Run 1 quart low, the meter should be near the middle but not full zone. Thats what works best for catless BMWs .
Enjoy

Though running catless downpipes will result in less backpressure at your turbo seals, and running less oil in your pan may slightly reduce the return feed pressure from your turbo CHRA's, properly functioning turbo seals should still be able to handle this. If you're catless and at the point where you're smoking unless you run less than full oil level, you should understand that you're just masking the problem by running less oil. It's a bandaid, not a fix.