Oil Leaks from Engine After Sub-Freezing Temperatures (Remove Ice/Water from Positive Crankcase Ventilation (PCV) Hose and Re-route Hose)

Some customers may comment on oil leaks from the engine during or following sub freezing temperatures.

This condition may be caused by water freezing in the PCV hose located between the throttle body and oil separator causing high crank case pressures resulting in oil leaks.

Remove ice/water from PCV hose and re-route hose to eliminate low sections to prevent blockage in sub-freezing temperatures. Refer to service procedure in this bulletin. Repair oil leaks using the appropriate Saturn Engine Service Manual.

1. Remove PCV hose from throttle body to PCV oil separator.

Important: Do not remove the braided covering from the hose.

2. Remove rubber isolator from PCV hose.



3. Cut the PCV hose to length as shown. Remove 65 mm (2.5 in.) from the throttle body end of the hose.



4. Install PCV hose over intake manifold. Ensure routing is between the A/C line and the intake manifold.



5. Install hose clamp over PCV hose at oil separator.
6. Remove the front Outlet Resonator/Duct Assembly-to-Support Bracket Bolt.
7. Install hose retainer, P/N 2043150, over PCV hose and secure with Air Cleaner Outlet Resonator Bolt.

Tighten
Tighten the Outlet Resonator/Duct Assembly-to-Support Bracket Bolts (L81) to 10N·m(89 in-lbs).




8. Install PCV hose on throttle body and secure clamp.

Important: Ensure nylon chaff protection is positioned between rubber hose and intake manifold at contact areas.

To receive credit for this repair during the warranty coverage period, submit a claim through the Saturn Dealer System for J6020 (Hose, Crankcase Case Ventilation - Replace).