Vehicles using 4G92 engine list:

Engine 4G92

Symptoms:
- Rough idling and hesitation during acceleration
- Engine misfires or loss of power
- Excessive oil consumption or smoke from the exhaust
- Overheating or coolant leaks
- Difficulty starting the engine or stalling

Diagnosis:
- Check ignition components such as spark plugs, ignition coils, and wires for wear or damage
- Inspect the fuel injection system for clogged injectors or fuel filter issues
- Perform a compression test to assess cylinder health and detect valve or piston ring problems
- Examine the timing belt for wear, cracks, or improper tension, as failure can cause severe engine damage
- Inspect coolant hoses, radiator, and thermostat for leaks or malfunction
- Scan for engine fault codes to identify sensor or electronic control issues

Fixes:
- Replace worn or fouled spark plugs and faulty ignition parts to restore proper combustion
- Clean or replace fuel injectors and fuel filters to ensure correct fuel delivery
- Repair or replace the timing belt at recommended intervals (usually every 60,000 to 100,000 km) to prevent engine damage
- Fix coolant leaks by replacing hoses, radiator, or thermostat as needed and flush the cooling system
- Address oil leaks by replacing gaskets or seals and change oil regularly to maintain engine lubrication
- Repair or replace faulty sensors or engine control units based on diagnostic results

Prevention:
- Follow the manufacturer’s recommended maintenance schedule for oil changes, timing belt replacement, and coolant service
- Use quality fuel and engine oil to reduce deposits and wear
- Regularly inspect ignition and fuel systems to catch issues early
- Monitor engine temperature and address overheating promptly
- Avoid prolonged idling and aggressive driving to reduce engine stress and wear

Maintaining the 4G92 engine with timely inspections and servicing ensures reliability and longevity in the Mitsubishi Colt, Mirage, Lancer, and Carisma models listed.