Vacuum Inside The Crankcase. Escort Zetec 1.6 66Kw

[taavi1981]

Hi. Can you solve my problem, From the very top of the engine on the opposite side of the oil cap there is a rubber hosing that leads to the air filter case, there is a serious vacuum and when i close it there starts a suctioning-whistleing noise from the engine front end. I have the first time in my life when i see this kind of weirdness. And under the exshaust manifold the ventilation collector there is everything as normal, light exshaust gasses. Thanks.

[Dan62]

Bad PCV maybe, should be found somewhere around the inlet manifold with a pipe going to the crankcase.