oil leak from dipstick and filler

[mike 850]

Does anyone know if running a bigger turbo can cause things like oil coming out of the dipstick, I have done my pcv, checked and no blockages. but under boost oil will start to come out the dipstick, didn't do this with the 15g only since the 19t! it doesnt force the dipstick out, I just get the smell of oil and can see it running down the dipstick tube, any ideas?

[t5 pete]

Crank case pressure obviously the larger turbo is putting more pressure on the engine when you did your breather system did you check all the ports were clear alot of people over look this

[mike 850]

I did check, I followed a guide a blew through all the ports and everything was very clear and clean, I have also ran a larger diameter hose to the intake so not sure

[M-R-P]

Have you checked the heater nipple that's on the intake that the braether hose connects to? if that's blocked it'll cause the same back-pressure as any other part of the pcv.

[jamesy12345]

Recirculation valve or idle control valve might be letting the higher pressure into PCV system? That can happen on the 480 turbos, not sure if it is applicable here