SPECIFICATIONS
| Description | Nm |
|---|---|
| Positive Crankcase Ventilation (PCV) valve bolts | 10 |
TORQUE SPECIFICATIONS
Scheme 1
| Item | Part Number | Description |
|---|---|---|
| 1 | Cylinder head cover bank B | |
| 2 | Part load breather valve | |
| 3 | Part load breather hose | |
| 4 | Positive crankcase ventilation (PCV) valve | |
| 5 | Cylinder head cover bank A | |
| 6 | PVC hose |
The V8 engine is ventilated through a part load and a full load breather.
The part load breather is a flexible composite hose connected between the PCV valve and the induction elbow at the rear of the engine. The PCV valve prevents reverse flow into the crankcase.
Scheme 2
The full load breather is a flexible hose connected between the oil separator in the bank B camshaft cover and the alloy intake air duct.
The ends of the breather hoses incorporate quick release connectors.
Scheme 3
The oil separators consist of wire gauze packed into an open ended enclosure below the breather outlet.
OVERVIEW
This section covers the basic checks for the engine breather system on the supercharged engine.
For information on the operation of the emission control systems, refer to relevant service information.
INSPECTION AND VERIFICATION
- Verify the customer concern.
- Visually inspect for obvious mechanical faults. VISUAL INSPECTION CHART Mechanical Engine breather hoses Oil separators Positive crankcase ventilation valve
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- Use the approved diagnostic system or a scan tool to retrieve any diagnostic trouble codes (DTCs) before moving onto the symptom chart. Make sure that all DTCs are cleared following rectification.
SYMPTOM CHART
Note. For a full list of ECM DTCs, refer to DTC index .
| Symptom | Possible cause | Action |
|---|---|---|
| Engine stalls soon after start | Breather system disconnected/restricted | Check the engine breather system hoses, separators, etc., refer to relevant service information. Rectify as necessary. |
| Poor throttle response | Breather system disconnected/restricted | Check the engine breather system hoses, separators, etc., refer to relevant service information. Rectify as necessary. |
| Engine oil leaks | Crankcase ventilation system restricted | Check the engine breather system hoses, separators, etc., refer to relevant service information. Rectify as necessary. |
Scheme 4
- Disconnect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-mounting-and-cables__specifications) .
- Remove the engine cover. For additional information, refer to: «ENGINE COVER V8 S/C 4.2L PETROL»(/land-rover/range-rover-sport/i-2005-2009/remont/exteriorinterior-trim/#interior-trim-and-omamentation) .
- Remove the PCV valve. Disconnect the PCV hose. Position the engine wiring harness aside for access. Remove the 2 bolts. Release the PCV valve.
INSTALLATION
- To install, reverse the removal procedure. Clean the components. Lubricate the seal with clean engine oil. Tighten the bolts to 10 Nm (7 lb.ft).
See also:
• DTC index
• SPECIFICATIONS
• ENGINE COVER V8 S/C 4.2L PETROL