PCV System: Description

The crankcase ventilation system prevents the escape of blow-by gases into the atmosphere. The crankcase ventilation system for DL, GL, and Turbo models consists of an oil trap, flame guard (except Turbo models), PCV valve, and connecting hoses.

Fig 1: Crankcase Ventilation System (DL, GL & Turbo) Turbo models do not use a flame guard.

The system for 760 GLE models consists of a calibrated PCV orifice, flame guard, and connecting hoses to intake manifold and start injector.

Diesel models route crankcase gases from top of valve cover through a connecting hose to the air intake duct. The 760 GLE Turbo Diesel models use an oil separator valve mounted on top of valve cover and a connecting hose to the turbo air intake.

Fig 2: Crankcase Ventilation System (760 GLE)