Component Tests and General Diagnostics

^ A plugged valve (3) or hose may cause the following conditions:
- Rough idle.
- Stalling or slow idle speed.
- Oil leaks.
- Oil in air cleaner.
- Sludge in engine.

^ A leaking crankcase ventilation valve or hose may cause the following conditions:
- Rough idle.
- Stalling.
- High idle speed.