[EktorGr]

Hello everyone,

Recently I replaced the crankcase gasket and after a while I was seeing lot of white smoke from exhaust after the car was idle for a while (only when hot and idle).

Before the replacement I didn't have any smoke problem.

So I decided to check visually for anything weird.

So I saw a major oil leak under the intake.

Spark plugs are clean

Any ideas?

E90 320i (n46b20 motor)

[TunafishE93]

I would check your crankcase gasket.

[EktorGr]

Even though its changed? I don't see any leaks from the crankcase

[TunafishE93]

Well I guessing it has something to do with the gasket or maybe something got knocked during install. Its hard to say. But you said no issue before and now issues....

[nsjames]

sounds like you have some sort of CCV issue and your intake is sucking up a lot of oil from the valve cover.

which crankcase gasket did you replace? The oil pan gasket?

[EktorGr]

No the top, where the valve tronic and plugs are

I doubt that would be the valve seals since no smoke at cold start and no other issues regarding performance.

Any way that I could check the ccv?

[nsjames]

Originally Posted by EktorGr

No the top, where the valve tronic and plugs are

I doubt that would be the valve seals since no smoke at cold start and no other issues regarding performance.

Any way that I could check the ccv?

then either the ccv has failed, or you're sucking air through your recently serviced valve cover and it's sucking oil into the intake.

that's pretty much the only way you end up with oil dripping out of the intake manifold is it came from the valve cover.

[EktorGr]

Fixed the oil leak, was from oil filter gasket.

Still problem with the smoke, not as bad as it was but still

[EktorGr]

Originally Posted by nsjames

then either the ccv has failed, or you're sucking air through your recently serviced valve cover and it's sucking oil into the intake.

that's pretty much the only way you end up with oil dripping out of the intake manifold is it came from the valve cover.

I checked the ccv hose that goes to intake, should have any oil in it?

I found a bit in there

[nsjames]

some.
a light coating is normal. there's oil vapor in it that's why it's routed to the intke so they can be burned.

did it smoke before you serviced the valve cover?
did it smoke immediately after?
if so, then 99% of the time it's the last thing you touched.

[EktorGr]

Yeah after like a day it started smoking