Vehicles using B230G engine list:

Engine B230G

Symptoms:
- Rough idling and hesitation during acceleration
- Reduced fuel efficiency and power output
- Engine misfires or stalling at low RPMs
- Excessive oil consumption or minor leaks
- Check engine light illumination related to ignition or fuel system

Diagnosis:
- Inspect ignition components such as spark plugs, wires, distributor cap, and rotor for wear or corrosion
- Check fuel injectors and fuel filter for clogging or malfunction
- Perform compression test to assess cylinder health and valve sealing
- Examine vacuum lines and intake manifold for leaks causing lean conditions
- Verify timing belt condition and timing marks alignment to ensure proper valve timing

Fixes:
- Replace worn or fouled spark plugs and ignition wires; service or replace distributor components as needed
- Clean or replace fuel injectors and fuel filter to restore proper fuel delivery
- Repair any vacuum leaks by replacing cracked hoses or gaskets
- Replace timing belt at recommended intervals (typically every 60,000 miles) to prevent timing failure
- Address minor oil leaks by replacing valve cover gaskets or oil seals; top up or change engine oil regularly

Prevention:
- Follow scheduled maintenance including timely replacement of spark plugs, ignition parts, and fuel filters
- Use high-quality fuel and oil to reduce deposits and wear
- Regularly inspect and replace timing belt before recommended mileage to avoid catastrophic engine damage
- Keep vacuum system intact and promptly repair any leaks to maintain engine efficiency
- Monitor engine performance and address symptoms early to prevent escalation into major repairs