UK-POLOS.NET - THE VW Polo Forum

Hi,

My Polo 1.4 (gasoline) runs rough at idle when warm.

I've done a compression test, nothing wrong there.
Done injector leak off test, all four good.
Tested all four coils and changed spark plugs.
Cleaned the map sensor & throttle body.
Checked for vacuum leaks, no leaks.
No fault codes on my ...

Hi, thank you for this info.
I have not changed the diaphragm as I did not know this.
I will also check the return valve you write about.

I have replaced the oil separator which is located on the backside of the engine, and I will soon replace the little valve on the air housing. Please see ...

Hi everyone,

I have a peculiar problem with my Polo 9N 1.2L
I had a oil leak from the old pvc oil separator so I replaced it with a new one, Oil leak is fixed but now it seems to be a high oil pressure in the engine. No fault lights and engine runs well but the crankhouse oil breather hose gets ...