[tnsguypat]

I have a 2007 335 with 90,000 miles. I have no smoke on cold start. When I park the car after driving it and start pulling out of a parking lot, a ton of smoke. I have noticed if I have the car idling and I hold the revs between 1k-2k rpm the cars shoots plumes of smoke. It smells like oil but even with the smoke it doesn't lose that much oil. Maybe a quart or two over 5k miles. I just changed the valve cover and valve cover gasket. Is it turbo seals? I have RB turbos that are about 15k miles old. Is it possible that the seals are bad already? Thanks for the help in advance.

[torrque]

When my 335i was shooting that much smoke, injectors went bad, they were locking up open, hence the smoke. But check your coolant, white smoke is usually water into the cylinders. Head gasket ?

[fordbaxter]

Originally Posted by tnsguypat

I have a 2007 335 with 90,000 miles. I have no smoke on cold start. When I park the car after driving it and start pulling out of a parking lot, a ton of smoke. I have noticed if I have the car idling and I hold the revs between 1k-2k rpm the cars shoots plumes of smoke. It smells like oil but even with the smoke it doesn't lose that much oil. Maybe a quart or two over 5k miles. I just changed the valve cover and valve cover gasket. Is it turbo seals? I have RB turbos that are about 15k miles old. Is it possible that the seals are bad already? Thanks for the help in advance.

This is one of those problems that could be a lot of things. When my car was smoking it was caused by the turbo seals but I've heard injectors, valve stem seals, and PCV issues can cause similar smoking.

[torrque]

Originally Posted by tnsguypat

I have a 2007 335 with 90,000 miles. I have no smoke on cold start. When I park the car after driving it and start pulling out of a parking lot, a ton of smoke. I have noticed if I have the car idling and I hold the revs between 1k-2k rpm the cars shoots plumes of smoke. It smells like oil but even with the smoke it doesn't lose that much oil. Maybe a quart or two over 5k miles. I just changed the valve cover and valve cover gasket. Is it turbo seals? I have RB turbos that are about 15k miles old. Is it possible that the seals are bad already? Thanks for the help in advance.

I think most likely either PCV valve or injectors.. Don't think turbo seals can go in 15k miles .

[tnsguypat]

Originally Posted by torrque

When my 335i was shooting that much smoke, injectors went bad, they were locking up open, hence the smoke. But check your coolant, white smoke is usually water into the cylinders. Head gasket ?

My car smells like gas a lot inside of the car but not really in the engine bay. The smoke and the outside of the car smell heavily like burning oil.

[tnsguypat]

Originally Posted by fordbaxter

This is one of those problems that could be a lot of things. When my car was smoking it was caused by the turbo seals but I've heard injectors, valve stem seals, and PCV issues can cause similar smoking.

Also when your car was smoking because of injectors, what color was the smoke and when would it smoke? Any specific moments? My car smokes only when it is warmed up and between 1k-2k rpm. If I hold the revs at 1500, the second I let off the car will shoot plumes of smoke.

[tnsguypat]

Originally Posted by torrque

I think most likely either PCV valve or injectors.. Don't think turbo seals can go in 15k miles .

I will definitely try the PCV valve next. I am thinking to order the RB one as it seems to be the cheapest and I also am running RB turbos

[TitanLH8]

Originally Posted by tnsguypat

My car smells like gas a lot inside of the car but not really in the engine bay. The smoke and the outside of the car smell heavily like burning oil.

In a similar situation...inside of the car smells like burning oil when I turn on the vents, especially sitting idle at a light. After a 10-15 min drive, I notice thin white smoke coming through the front grills. Can't see where there are any oil leaks and there are no oil stains on the ground when I leave it overnight.

My guess is that there is some oil leak and it's dripping on the exhaust pipe and burning off??? Is that even a rational statement?

Anywho, I'm bringing the car to the shop today to have it checked out.

[NoQuarter]

Originally Posted by TitanLH8

In a similar situation...inside of the car smells like burning oil when I turn on the vents, especially sitting idle at a light. After a 10-15 min drive, I notice thin white smoke coming through the front grills. Can't see where there are any oil leaks and there are no oil stains on the ground when I leave it overnight.

My guess is that there is some oil leak and it's dripping on the exhaust pipe and burning off??? Is that even a rational statement?

Anywho, I'm bringing the car to the shop today to have it checked out.

Yes. Valve cover gasket leaks and drips on to the exhaust

[Quick335XI]

This could be a lean condition

[GoRomeo]

Originally Posted by NoQuarter

Yes. Valve cover gasket leaks and drips on to the exhaust

this...

change your OFHG oil filter gasket while you at it..

[TitanLH8]

Confirmed it was a valve cover gasket leak. Changed the OFHG a while back

[VancleVector]

Maybe it is gasket leak. I got coolant leak at the contacting planes of the cylinder line and cylinder block. And I just check the contacting planes for flatness and the gasket for damage, and make replacement if necessary.

I usually got problem on my engine of cummins generator, cars or other machines.

Check for leakage of the delivery valve and inspect whether plunger is worn- out, and if the plunger spring and delivery valve spring is broken, replace the damaged parts, cylinder gasket and readjust oil pump if necessary.

If gasket damage or leakage, replace it.

[tnsguypat]

So I changed my PCV valve and now my car smokes a lot more after upgrading to the RB PCV. It was smoking only between 1000rpm and 2000 rpm and now it smokes at all rpm. It smokes most between 1k rpm and 2k rpm but smokes constantly. I also tried recreating the smoke between 1k and 2k rpm with the vacuum lines to the boost solenoids unplugged to see if it was a turbo issue and still no difference. I am baffled at this point. Not valve cover gasket or valve cover(unless I somehow installed it incorrectly), doesn't seem to be turbos, and not the PCV. What else can make my car smoke thick white smoke?

[MysticRob]

Originally Posted by tnsguypat

I have a 2007 335 with 90,000 miles. I have no smoke on cold start. When I park the car after driving it and start pulling out of a parking lot, a ton of smoke. I have noticed if I have the car idling and I hold the revs between 1k-2k rpm the cars shoots plumes of smoke. It smells like oil but even with the smoke it doesn't lose that much oil. Maybe a quart or two over 5k miles. I just changed the valve cover and valve cover gasket. Is it turbo seals? I have RB turbos that are about 15k miles old. Is it possible that the seals are bad already? Thanks for the help in advance.

Aftermarket turbos and engine drinks 1-2 quarts every 5k miles?
Sounds like you've already guessed the most likely issue.

[tnsguypat]

Originally Posted by MysticRob

Aftermarket turbos and engine drinks 1-2 quarts every 5k miles?
Sounds like you've already guessed the most likely issue.

I just unplugged the vacuum lines to run the car without the turbos and the car still smokes exactly the same which leads me to believe it is not the turbos. What else could it be?

[MysticRob]

Originally Posted by tnsguypat

I just unplugged the vacuum lines to run the car without the turbos and the car still smokes exactly the same which leads me to believe it is not the turbos. What else could it be?

Why are you thinking unplugging vacuum lines will have any effect on leaky turbo seals? Leaking turbo seals won't be magically fixed by disabling the wastegates' abilities to help build boost. Turbines will still spin when the exhaust goes rumbling by the blades.

Tear into it and see what evidence there is of oil contamination. Is there mass oil on the turbo intake side? Maybe mass oil on the exhaust side at the downpipe?

[torrque]

Originally Posted by tnsguypat

I just unplugged the vacuum lines to run the car without the turbos and the car still smokes exactly the same which leads me to believe it is not the turbos. What else could it be?

Did you do a compression test ? That could reveal if any valves/rings issues...

[MysticRob]

Originally Posted by tnsguypat

So I changed my PCV valve and now my car smokes a lot more after upgrading to the RB PCV. It was smoking only between 1000rpm and 2000 rpm and now it smokes at all rpm. It smokes most between 1k rpm and 2k rpm but smokes constantly. I also tried recreating the smoke between 1k and 2k rpm with the vacuum lines to the boost solenoids unplugged to see if it was a turbo issue and still no difference. I am baffled at this point. Not valve cover gasket or valve cover(unless I somehow installed it incorrectly), doesn't seem to be turbos, and not the PCV. What else can make my car smoke thick white smoke?

I'll note this from the 2007 Engine Mechanical PDF I have:

Note: Be aware that any check valve failure could cause excessive oil consumption possibly accompanied by blue smoke from the exhaust. This should not be mistaken for a failed turbocharger. Always perform a complete diagnosis of the crankcase ventilation system, before replacing any turbocharger or associated components.

This is not to say it's your current problem, but something to be aware of. I'm not as boned up on the PCV system as I'd like to be, but I'm now wondering if you had the smoking issue BEFORE or AFTER changing the valve cover (your posts don't say). If not, start looking closely at the valve cover and PCV system.

[mweisdorfer]

Originally Posted by tnsguypat

So I changed my PCV valve and now my car smokes a lot more after upgrading to the RB PCV. It was smoking only between 1000rpm and 2000 rpm and now it smokes at all rpm. It smokes most between 1k rpm and 2k rpm but smokes constantly. I also tried recreating the smoke between 1k and 2k rpm with the vacuum lines to the boost solenoids unplugged to see if it was a turbo issue and still no difference. I am baffled at this point. Not valve cover gasket or valve cover(unless I somehow installed it incorrectly), doesn't seem to be turbos, and not the PCV. What else can make my car smoke thick white smoke?

Did you change the breather / vent one way valve next to the PCV valve ?

If that goes bad, and it will, it cause excess pressure resulting in oil leaking on the exhaust. Replace that with the PCV valve every 50k, as Rob Beck suggests on his website.

[tnsguypat]

Originally Posted by MysticRob

I'll note this from the 2007 Engine Mechanical PDF I have:

Note: Be aware that any check valve failure could cause excessive oil consumption possibly accompanied by blue smoke from the exhaust. This should not be mistaken for a failed turbocharger. Always perform a complete diagnosis of the crankcase ventilation system, before replacing any turbocharger or associated components.

This is not to say it's your current problem, but something to be aware of. I'm not as boned up on the PCV system as I'd like to be, but I'm now wondering if you had the smoking issue BEFORE or AFTER changing the valve cover (your posts don't say). If not, start looking closely at the valve cover and PCV system.

Yes I had smoke only between 1k rpm and 2k rpm and only when the engine was hot or if I drove the car and let it sit for an hour or two, when i would start it back up and pull out of the parking lot I would again have smoke. First thing I did was I replaced the valve cover and the valve cover gasket. No change. So I just changed the stock PCV to the RB PCV hoping that would solve it. Made it worse. No saying the RB PCV caused it, I'm just saying I now have smoke at all rpm while driving but it is noticeably much worse between 1k rpm and 2k rpm. I will try to throw the car up in the air this weekend to check for oil from underneath. I'm not an expert mechanic so please be aware that anything I do is usually because someone tells me to do it or try it. I was told to disconnect the vacuum lines from the solenoids and that if it was indeed the turbos the smoke may still appear but because the boost pressure would be much lower, in turn there would be less smoke. Which makes sense to me. However, when I did do that, the smoke was still very thick and it did not change at all. I know that it can still be the turbos but my guess is that it is not likely. Most of my smoke comes before the car is in boost.

[tnsguypat]

Originally Posted by mweisdorfer

Did you change the breather / vent one way valve next to the PCV valve ?

If that goes bad, and it will, it cause excess pressure resulting in oil leaking on the exhaust. Replace that with the PCV valve every 50k, as Rob Beck suggests on his website.

I did not, I only changed the PCV valve as I do not know what the breather valve is and you are the first to suggest this option. I will look into it.