I’m just getting familiar with the A14NE(L,T) motors. More precisely, crankcase ventilation, charging pressure control and connecting lines. If I see this correctly, the charging pressure control valve sits under the suction bridge on the channel to the first cylinder. From this, a hose goes forward to the control box on the turbocharger, the other two connections must therefore be connected to the athmosphere pressure and charging pressure. In addition, there are two pressure sensors in the intake bridge, one of which (if I understand correctly) measures the athmosphere pressure. From this I conclude that there is a separate chamber in the intake bridge, which is only impacted with athmosphere pressure. Is this correct? Is there next to the fungus valve in the intake bridge and the diaphragm valve in the valve cover other valves that are involved in the crankcase ventilation? g works when underpressure in the crankcase prevails. If underpressure in the intake tube prevails (empty run = throttle flap closed and no charging pressure) the diaphragm valve in the valve cover closes in order to limit the underpressure in the crankcase. How is the crankcase ventilated then? The underpressure must finally be dismantled. Actually, I would expect an additional non-return valve, which in this case opens and leaves air from the athmosphere into the crankcase (intake point sense). fully between LMM and turbocharger).