Hi i would like some ideas on this i replaced oil cap breather and pcv valve and still oil coming out of breather at normal speeds down the road.This has been going on for quiet awhile from the previous qwner had it .Do you think maybe the vent coming out of the top of the valley pan in restricted? Thanx
This is caused by excessive piston blow by. The piston rings are worn allowing too much gas to blow by the rings.
Check that the PCV valve is sucking, and that oil fill cap is allowing air to be drawn in. After that, try the sock trick.
Sounds good it is also leaking oil out of valve covers and oil pan which is that maybe it sounds like it might be plugged @ the back of the that black fitting coming out of the oil valley cover. The gaskets were replaced by the previous owner as i just recently purchased the car.Motor runs good plenty of power not smoking not fouling plugs. I just replaced oil cap and pcv valve.Thank you
You have too much pressure in the crankcase. Check that the vent tube attachment on the valley cover is not obstructed, and that your pcv valve is good, and that you have good vacuum to the pcv hose coming from the valley cover. Do yourself a favor and read this -> http://mewagner.com/?p=2173
Thank you for your input and information you gave me on my caddy,its much appreciated Thanks again
Keep an eye on your oils consistency
Rub the oil between your two fingers to see how it feels when fresh and then with miles on it
Blow by is allowing gasoline and combustion residue into the crankcase which can have the effect of causing the oil to thin out which will cause less than normal lubrication problems as the oil is breaking down and thinning from gasoline getting into it in the crankcase
More frequent oil changes should help —if oil starts to feel thin between your fingers when you test it
New piston rings and or an engine rebuild should be the only solution to worn rings causing the piston blow by
You are building up gases and pressure in the crankcase that should not be there which is pushing oil out of the other engine gaskets and the oil cap
A compression test to determine the health of each cylinder could be a very good idea if you really need to know what is going on with the cylinder ring blow by