Exhaust Gas Recirculation (EGR) System
Location of EGR and Crankcase Ventilation System Components
| Item name | Spare part catalog number | Description |
| 1 | - | Full load mode tube |
| 2 | - | Pressure regulator (PCV) |
| 3 | - | Partial load mode tube |
| 4 | - | EGR pipe |
| 5 | - | EGR valve |
| 6 | - | Electronic throttle |
The EGR system is controlled by PWM signals transmitted by the ECM. The system includes an EGR valve and a gas pipe.
The EGR valve is driven by a 4-pole stepper motor with an integrated cooler, which is mounted on the side of the supply pipe. Cooling of the EGR valve is provided by the coolant returning from the throttle valve.
The gas pipe connects the EGR valve to the left exhaust manifold.
Crankcase ventilation
The V8 engine ventilation system consists of a part-load ventilation circuit and a full-load ventilation circuit.
The part load breather is a flexible composite tube that connects the PCV valve, mounted above the oil separator in the Bank A camshaft cover, to the feed pipe. The Positive Crankcase Ventilation (PCV) valve prevents backflow into the crankcase.
The full load breather is a flexible hose that connects the oil separator located in the bank B camshaft cover and the air intake manifold.
The breather hoses are equipped with quick-release connectors.
[The article was copied from this resource: LRman.ru]
The oil separator is a housing with a wire mesh packing, located under the breather.
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