Initial Inspection and Diagnostic Overview

1. Visually inspect the components of the Positive Crankcase Ventilation (PCV) system.

Mechanical
- Loose, leaking, clogged, or damaged hoses

- Plugged or inoperative PCV valve

- Cracked, split or missing PCV grommet

2. Check the fresh air inlet hose and the PCV hose for air leakage or flow restriction due to loose engagement, kinking, nipple damage, rubber grommet fit, elasticity or any other damage.

3. Check engine for rough idle, slow starting, or high oil consumption.

4. If a component is suspected as the obvious cause of a malfunction, correct the cause before proceeding to the next step.

5. If all checks are OK, proceed to Positive Crankcase Ventilation Pinpoint Tests. Pinpoint Tests