Emission Control: Diagnosis
| SYMPTOM | PROBABLE CAUSE | REMEDY |
|---|---|---|
| Engine will not start or hard to start | Vacuum hose disconnected or damaged | Repair or replace |
| Malfunction of the evaporative emission purge solenoid | Repair or replace | |
| Rough idle or engine stalls | Vacuum hose disconnected or damaged. | Repair or replace |
| Malfunction of the PCV valve | Replace | |
| Malfunction of the purge control system | Check the system; If there is a problem, check its component parts. | |
| Excessive oil consumption | PCV line clogged | Check PCV system |