Oil Blowing Out From Bov

[BSK]

after some heavy driving tonite i noticed oil on the outside of my bonnet. after closer investigation i found it it had blown out from my forward facing bov in between the grille and headlight infront of my car and back onto my bonnet and headlight....wtf

so im just trying to get me some more knowledge on this issue...

I currently believe this is caused by pressure in the head blowing oil out thru the breather into the intake and back thru the turbo n cooler etc etc. so when the charged air is released thru the bov i get oil blowing out.

so im just wondering is this normal? or a bad sign?

does this cause performance loss due to all the oil blowing into the cylinders?

can this cause poor fuel economy?

could this cause smoke out of the zaust at full throttle when im running high boost because of the excessive oil passing back thru the motor and burning up?

is an oil catch can my fuel economy solution?

any help or opinions appreciated

thanks guys..

edit: sorry i should have put this in the forced induction area... mods ??

Edited May 15, 2006 by BSK

[Craved]

could be blow by, or a turbo seal issue.

try a catch can .. or a pipe into a coke bottle from your head breathers.. if there is oil in the bottle then its blow by.

if not then turbo seal could be shagged

yes oil in the combustion with affect power and make it more likely to ping.

also check your oil levels cos its gotta be using oil.. dont wanna ruin your bearings if it runs low/out.

catch can would not be a solution, just an extra tool to figure out where the problem is..

can cause fuel economy issues as you put your foot down more to do the same thing.

[BSK]

i installed a catch can tonite and gave it a good old thrashing and sure enough there is oil in the clear hose so im hoping this is the end and its not a turbo problem... fingers crossed.

on a side note my air/fuel guage is now jumping around a bit since fitting the can. it came with the car so i dont know much about reading an air/fuel guage or where it takes its readings from other then it sits on 14 on idle and under acceleration, then when i back off it moves up to about 18 and hangs there for several seconds or until i accelerate again and it moves back to 14..... anyways now it still behaves like before exept when the car comes on boost it drops back to 13 and sometimes bounces off 11 then back upto 14..... ????

my installation was very simple (the can is looped into the hose between the breather and just before the turbo) and i have triple checked everything... no vac leaks or hoses removed... car feels just as good as before maybe even a little better and definately no pinging.

any ideas?

[Craved]

12.0 - 12.5 is usually the best AFR for on boost.

14.7 or so when cruising to save fuel

bouncing is from the closed loop used on cruise to save fuel.

====

catch can with oil in it .. = not the best..blowby which is usually rings etc worn .

get a comp test done to see how your engine is going..

i got about 145 on all cyl's and it doesn't have blowby.

[BSK]

bugger! i've been putting off taking it to a workshop till after i get back from the worldcup.... not the kind of thing u wanna hear before going away... oh well... its a garaged 32 now i guess.

cheers for your input crave.