PCV Orifice: Service and Repair

Part Throttle Orifice Control Housing:

CAUTION: This Operation must only be carried out on a cold or cool engine.

- Carefully remove and refit the pressure cap from the remote header tank to release coolant system pressure.
- Slacken the housing to breather pipe hose clip (1) and disconnect breather hose from the housing.
- Remove the bolts securing the housing (2) and displace the housing above engine level for access.
- Remove and discard the housing gasket. Loosen the coolant hose clips and disconnect the hoses from the housing.
- Position the hoses above engine level to prevent spillage.
- Remove the housing (3).
- Clean the inlet manifold gasket face. Fitting a new housing is the reverse of the removal procedure, ensuring that the coolant is topped up to the correct level.