E90 White smoke fix

My car is a 2009 bmw 320i with n46nb20 engine; I noticed the white smoke at half way of my journey, I STILL need to drive a long way home; I thought was head gasket problem at very beginning when I NOTICED the white smoke. After arriving home, I checked coolant level, did not lose any coolant and did have over heating problem after a continuous 500kms drive. So I dont think was the head gasket problem. If your car has similar problem, you may need to find out whether is head gasket problem or not before taking next step check on your car.

[@TrulyBlessedHairStudio]

2011 e90 328i xdrive. Replaced valve cover gasket, oil filter housing, coils, spark plugs. All issues revolving around the above listed things have been fixed. The only issue now that bothers me is the white smoke from the exhaust.
Car only has 150kms and is in amazing condition.
Smokes on idle at red lights, enough to grab EVERYONES ATTENTION, and also smokes when acceleratinggg ENOUGH for all drivers behind me to stop driving and pull over because they can’t see!!!
I’d appreciate any advice please and thank you.

[@joeystothers9596]

Can you get back to me if you’ve figured out what it was? Not burning coolant or oil, smokes like A train when I accelerate hard and when I idle, does intermediatly

[@TrulyBlessedHairStudio]

@@joeystothers9596 what year and exact model is yours? and describe all issues for me

[@luisvargas8371]

Im going thru this rn...misfire on cylinder 1... while idle white smoke Reving even thicker...
I replaced the pcv pump amd hoses.
This all happend when i replaced the starter and put everything back together. While i was putting it all back i noticed the valves had fuel....i dont know if that caused this to happen

[@antman3891]

Well done!

[@nashmahabeer6701]

So which solved the problem was it pcv or valve stem seals

[@Mink00100]

Did that fix the cat converter error? Also what rpm did you have at idle before replacing it?

[@adyciocan4596]

I changed the same thing in my E90, I had the same problem but it still sometimes leave a cloud of smoke behind when driving, any tips?

[@weijunzhang2924]

Might be your valve stem seals failed, it’s common on e90s

[@raffpv6473]

I had the same problem. Did you fix it?

[@weijunzhang2924]

Yeah, I fixed it. It is now not smoking any more.

[@Osamabeenleanin210]

@@weijunzhang2924 what was the fix?

[@weijunzhang2924]

@@Osamabeenleanin210 pcv diaphragm was broken. And also changed stem valve seals

[@dawoodazhar8481]

@@weijunzhang2924how much did it cost?

[@ST-42]

That is not the pcv valve. My e46 has the exact same engine. The pcv is under the intake manifold in the back of the engine

[@magnuskea1400]

What was the issue?

[@giorgiberuashvili3419]

bmw n43 engine. The symptoms are the same. Can the same part be blamed?

[@weijunzhang2924]

I don’t know sorry man. It fixed my E90 with the continuously white smoke.

[@joeljokinen1136]

Same problem! Was it this same part or what?

[@bigdeal87]

Was it the ccv?

[@poraart]

ปัญหาควันขาว e90

[@israelliontribeoffaith1986]

Dude that is not a PVC valve.

[@MoAli-vh8uo]

What is it then

[@CaliRepublic77]

Trust me it is. I have an e60 with same exact issues. When you have that sipping sound as you open the oil cap, it’s the engine trying to release blow by gas because PCV is failing.

[@descendingz6017]

What was the issue?

[@weijunzhang2924]

Pcv failed.