k12 1.0 2003

Hi guy.

I have a Micra k12 1.0 2003.

I have an issues with the car it is losing oil i have checked for oil leaks around the engine i even pressure washed the engine had another look under and over jacket up the car the full lot not one oil leak .

took off the throttle body plastic part i saw oil in the intake manifold

took out the spark plugs no oil on all 4 plugs

Did a head gasket check came back blue so all is good

I'm starting to think its valve seals ????

I lost 1L of oil over two weeks

as anyone came across this before
It's probably coming though the pcv valve connecting engine to intake. Suppose to provide pressure release for air displacement in the engine.

I've notice the same thing today.