![[-]](https://vxoc.org.uk/forum/images/dark1.8/collapse.png "[-]")
23:rd-Apr-2020, 09:05:22
Hi everyone from Australia!
Hope your all well and keeping busy with your Astra's, I know I am.
I'm here looking for info on the crankcase ventilation of my GTC. I have serious a vacuum in my crankcase/head causing bad whining or squealing when the car is warm.
Its definitely the vacuum causing the squealing as when I remove the dipstick or oil cap it stops dead.
I'm thinking a PCV valve is causing this but im unsure on how the system works on these cars.
On the camshaft cover is a pipe going to the turbo intake (PCV I presume). The crankcase vacuum is still there when disconnected from the intake so it's not this PCV.
There must be another PCV on the inlet manifold past the throttle body, does anyone have any information on the vacuum system?
I thought maybe the auxiliary vacuum pump on the cam shaft but its not that when isolated either.
Any advice would be much appreciated, thanks guys!
Hope your all well and keeping busy with your Astra's, I know I am.
I'm here looking for info on the crankcase ventilation of my GTC. I have serious a vacuum in my crankcase/head causing bad whining or squealing when the car is warm.
Its definitely the vacuum causing the squealing as when I remove the dipstick or oil cap it stops dead.
I'm thinking a PCV valve is causing this but im unsure on how the system works on these cars.
On the camshaft cover is a pipe going to the turbo intake (PCV I presume). The crankcase vacuum is still there when disconnected from the intake so it's not this PCV.
There must be another PCV on the inlet manifold past the throttle body, does anyone have any information on the vacuum system?
I thought maybe the auxiliary vacuum pump on the cam shaft but its not that when isolated either.
Any advice would be much appreciated, thanks guys!