Vehicles using AJV engine list:

Engine AJV

Symptoms:
- Rough idling and stalling
- Loss of power or poor acceleration
- Engine misfires or hesitation
- Check Engine Light illumination
- Excessive oil consumption or leaks

Diagnosis:
- Inspect ignition components (spark plugs, coils) for wear or damage
- Check for vacuum leaks around intake manifold and hoses
- Perform compression test to assess cylinder health
- Scan ECU for fault codes related to sensors (MAF, oxygen sensors)
- Examine timing belt condition and tension
- Inspect PCV valve and related components for clogging or failure

Fixes:
- Replace worn spark plugs and faulty ignition coils to restore smooth combustion
- Repair or replace cracked or leaking vacuum hoses to eliminate air leaks
- Replace timing belt if worn or past recommended service interval to prevent engine damage
- Clean or replace MAF sensor and oxygen sensors to ensure accurate fuel mixture
- Replace faulty PCV valve to prevent oil leaks and maintain crankcase pressure
- Address oil leaks by replacing gaskets or seals as needed

Prevention:
- Adhere to regular maintenance schedule, including timely spark plug and timing belt replacement
- Use quality fuel and engine oil to reduce deposits and wear
- Regularly inspect and replace air filters to maintain proper airflow
- Monitor engine performance and address warning signs promptly
- Keep the PCV system clean to avoid pressure buildup and oil leaks

By following these diagnostic steps and maintenance tips, owners of vehicles with the AJV engine can minimize common issues and ensure reliable performance.