Chevrolet Sonic Repair Manual: Crankcase Ventilation System Inspection/Diagnosis
- Results of Incorrect Operation
-
A plugged positive crankcase ventilation (PCV) orifice or hose may cause the following conditions:
- Rough idle
- Stalling or slow idle speed
- Oil leaks
- Oil in the throttle body
- Sludge in the engine
- Functional Check
-
With these systems, any blow-by in excess of the system capacity, from a badly worn engine, sustained heavy load, etc., is exhausted into the throttle body and is drawn into the engine.
Proper operation of the crankcase ventilation system depends upon a sealed engine. If oil slugging or dilution is noted and the crankcase ventilation system is functioning properly, check the engine for a possible cause. Correct any problems.
If an engine is idling rough, inspect for a clogged PCV orifice, a dirty vent filter, air cleaner element, or plugged hose. Replace as required. Use the following procedure:
- Remove the PCV hose from the cylinder head cover.
- Operate the engine at idle.
- Place your thumb over the end of the hose in order to check for a vacuum. If there is no vacuum at the hose, inspect for the following items:
- Plugged hoses
- The manifold port
- Turn OFF the engine.
- Inspect the PCV orifice in the cylinder head cover for debris or blockage.
PCV
...
Positive Crankcase Ventilation Hose/Pipe/Tube Replacement
Removal Procedure
Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct
Replacement.
Open the 2 positive crankcase ventilation pipe retainer clips ...
Other materials:
Rear Bumper Fascia Tow Eye Access Hole Cover Replacement
Rear Bumper Fascia Tow Eye Access Hole Cover Replacement
Callout
Component Name
1
Rear Bumper Fascia Rear Tow Eye Access Hole Cover
Procedure
Using a small flat-bladed tool, release the cover from the rear
bu ...
Rear Side Door Window Weatherstrip Replacement (Hatchback)
Rear Side Door Window Weatherstrip Replacement
Callout
Component Name
Preliminary Procedure
Remove the rear side door window . Refer to Rear Side Door Window Replacement.
1
Rear Side Door Window ...
Window washer fluid
WARNING
Washer antifreeze solutions are toxic. Always store them in labeled containers
and keep them away from children and animals.
Maintain the washer fluid level in your Nissan Armada by checking it periodically
and refilling as needed, especially when the low washer fluid warning ind ...
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