Symptom Related Diagnostic Procedures

SYMPTOM / PROBABLE CAUSE

Engine will not start or is hard to start
- Vacuum hose disconnected or damaged.
- The Exhaust Gas Recirculation Valve is not closed.
- Malfunction of the Canister Purge Solenoid Valve.

Rough Idle or engine stalls
- The Exhaust Gas Recirculation Valve is not closed.
- Vacuum hose disconnected or damaged.
- Malfunction of the Positive Crankcase Ventilation Valve.
- Malfunction of the Canister Purge Solenoid Valve.

Engine Hesitates or poor acceleration
- Malfunction of the Exhaust Gas Recirculation System.

Excessive oil consumption
- Positive Crankcase Ventilation line plugged.

Poor fuel mileage
- Malfunction of the Exhaust Gas Recirculation System.