S80 T6 oil leak and pcv problem
 

I replaced oil trap and hoses to oil trap. Still have air pressure when lifting up the oil dipstick. There is oil leak from driver's side top rear of the engine in the camshaft corner. From all the posts I couldn't find if anything can be cloged from the sludge in the oil pan or anywhere so I can find the problem for the pcv pressure. Please help.

Did you clean the banjo fitting really good and the small hose?
A front cam seal might be bad and leaking.

I replase the banjo fitting and the small hose. I didn't mention that there is negative air pressure on the oil dipstick. When I pull out the dipstick engine rpm increase and runs smooth. Is there anything that has to be cleaned out in the oil pan( some port where oil goes from oil trap) and I will appreciate if anyone can draw a exact diagram of pcv on S80 T6 so I can anderstand why is it negative air pressure. There is oil leak on rear camshaft driver's side corner and oil geting in (i don't know from where in air intake pipe and around spark plugs. Thanks for your response