Vehicles using G13B engine list:

Engine G13B

Symptoms:
- Rough idling and stalling
- Loss of power and poor acceleration
- Excessive oil consumption or smoke from the exhaust
- Overheating issues
- Engine knocking or unusual noises

Diagnosis:
- Check for vacuum leaks around intake manifold and hoses
- Inspect spark plugs and ignition components for wear or fouling
- Perform a compression test to assess cylinder health
- Examine timing belt condition and alignment
- Look for signs of oil leaks or coolant contamination in the oil
- Scan for any error codes if equipped with an OBD system

Fixes:
- Replace worn or damaged spark plugs and ignition wires
- Repair or replace vacuum hoses causing leaks
- Change timing belt and tensioner if worn or past service interval
- Address oil leaks by replacing gaskets or seals as needed
- Flush and replace coolant to prevent overheating and corrosion
- Clean or replace the idle air control valve to stabilize idle
- Repair or rebuild engine components if compression test shows significant wear

Prevention:
- Follow regular maintenance schedule, including timely oil and filter changes
- Replace timing belt every 60,000 to 90,000 km to avoid failure
- Use quality fuel and spark plugs to maintain combustion efficiency
- Regularly inspect and replace air filters to prevent dirt ingress
- Monitor coolant levels and condition to prevent overheating
- Avoid prolonged idling and aggressive driving to reduce engine stress

The G13B engine is generally reliable but benefits greatly from consistent maintenance and timely replacement of wear items to ensure longevity and performance.