B18C4 TD05 high crankcase pressure


X

xtp

New Member
Joined
Jul 28, 2009
Messages
12
Hello, I had problem with leaking oil from turbo. Problem was high crankcase pressure not allow to drain oil from turbo to oil pan. I made fittings like this :
photo-104.jpg

But now if I drive to 6000rpm is everything good, but if I go higher it looks like same problem. In high rpms car smokes. In 6000rpm with wastegate I have 0.2bar and it doesnt smoke. If I disconnect wastegate I have 0.15-0.2bar in 8400rpm. So that looks like the turbo is good. Can someone know what can be cause of high crankcase pressure if I did venting? Pressure in cylinders are very good and same.
 
Last edited:
but there should be bad compression? car rides without turbo good. there are new piston rings
 
Where are those vents going?
 
This isnt my engine, but I have vented it from these plugs to open catch can with hose from (original blackbox return from blox {i mean place on photo where is electrical tape} + original venting from valvecover)
 
one thing what I forget to write : before I did vented block, there was high pressure in crankcase in idle (not with turbo in boost). I had turbo outside of exhaust manifold, just only connected to oil feed line and long transparent oil drain. In maybe 30s, has filled up from oil pan to turbo through oil drain.
 
today I tried to check compression again 14-13.8-13.9-14.5. new piston rings has maybe 1000km + 25hours of idle working
 
You must log in or register to reply here.
Back
Top