Ventilation system картера — closed, compulsory, operating at the expense of depression in an inlet pipe and the air filter.

At work of the engine gases from картера are sucked away: idling and small loadings — through the calibrated aperture of the carburettor in an inlet pipe, on full loadings — through the air filter, on other modes — through the air filter and the calibrated aperture of the carburettor.

On the working engine at serviceable system of ventilation in it картере there should be a depression which can be defined by means of water пьезометра, the index of level of oil attached to a branch pipe. If the system works abnormally in картере there will be a superfluous pressure. It is possible in a case закоксовывания channels of ventilation or excessive break of gases in картер the engine.

At operation of the car do not break tightness of system of ventilation картера the engine and do not suppose its work at opened маслозаливной to a mouth: it causes the raised deterioration of the engine.