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 pictures...

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 blow...