Required Service

PCV system may require service for an obstructed PCV valve or hose if any of the following conditions exist:

• Excessive exhaust emissions.
• High crankcase pressure.
• Oil leaks.
• Oil in air cleaner.
• Oil consumption.
• Rough idle.
• Sludge in engine.
• Stalling or low idle speed.

A leaking PCV valve or hose could cause:

• Excessive exhaust emissions.
• Incorrect crankcase pressure.
• High idle speed.
• Rough idle.
• Stalling.

If engine idles roughly, check for clogged PCV valve, or plugged or broken hoses before attempting to repair incorrect idle. Check PCV valve application to ensure correct valve is fitted. Replace PCV valve as necessary.