Required Service

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The PCV system may require service for obstructions if any of the following conditions exist:

Rough idle.
Stalling or slow idle speed.
Oil leaks.
Oil in air cleaner.
Sludge in engine.

A leaking PCV valve or hose could cause:

Rough idle.
Stalling.
High idle speed.

If engine idles rough, check for clogged PCV valve, or plugged or broken hoses BEFORE adjusting idle. Check PCV valve application to ensure correct valve is fitted. Replace PCV valve if required.