PCV System - 2.0L GTDI
The PCV system uses intake manifold vacuum to ventilate blow-by vapors from the crankcase and return the vapors to the intake manifold for combustion. The PCV valve varies the amount of blow-by vapors returned to the intake manifold based on available engine vacuum. The PCV valve is serviced as part of the crankcase vent oil separator.
PCV System - 3.5L/3.7L
The PCV system
- uses intake manifold vacuum to ventilate blow-by vapors from the crankcase.
- returns the vapors to the intake manifold for combustion.
The PCV system consists of the
- crankcase ventilation tube.
- PCV valve.
The PCV valve
- varies the amount of blow-by vapors returned to the intake manifold based on available engine vacuum.
- prevents combustion gases from backfiring into the crankcase.
Refer to the INTRODUCTION article.
Scheme 47
| Item | Part Number | Description |
|---|---|---|
| 1 | W500214 | Crankcase vent oil separator bolt (8 required) - 10 Nm (89 lb-in) |
| 2 | 6A785 | Crankcase vent oil separator |
| 3 | Crankcase vent oil separator gasket (part of 6A785) |
- Remove the intake manifold. For additional information, refer to «ENGINE - 2.0L GTDI»(ref-494556) .
- Remove the 8 bolts, crankcase vent oil separator and the gasket. To install, tighten to 10 Nm (89 lb-in).
- To install, reverse the removal procedure. Inspect and replace the crankcase vent oil separator gasket as necessary.
Positive Crankcase Ventilation (PCV) Valve
| Item | Specification |
|---|---|
| Motorcraft® SAE 5W-20 Premium Synthetic Blend Motor Oil (US); Motorcraft® SAE 5W-20 Super Premium Motor Oil (Canada) XO-5W20-QSP (US); CXO-5W20-LSP12 (Canada) | WSS-M2C945-A |
MATERIAL SPECIFICATIONS
Scheme 48
| Item | Part Number | Description |
|---|---|---|
| 1 | 6A664 | Crankcase ventilation tube |
| 2 | 6B890 | PCV valve |