Vehicles using Z 24 engine list:

Engine Z 24

Symptoms:
- Engine overheating during extended use or heavy load
- Rough idling or stalling at low RPMs
- Reduced power and acceleration
- Excessive oil consumption or visible oil leaks
- Difficulty starting the engine, especially when cold

Diagnosis:
- Check coolant levels and inspect radiator and hoses for leaks or blockages
- Inspect the thermostat and water pump operation for proper coolant circulation
- Examine spark plugs and ignition components for wear or fouling
- Perform a compression test to assess cylinder health and head gasket integrity
- Look for oil leaks around valve cover gaskets, oil pan, and seals
- Test the fuel system for clogged injectors or fuel filter issues

Fixes:
- Replace faulty thermostat or water pump to restore proper cooling
- Repair or replace damaged radiator hoses and ensure radiator is clean and unobstructed
- Change spark plugs and ignition wires as needed to improve combustion
- Address any head gasket leaks or worn piston rings identified by compression testing
- Replace worn gaskets and seals to stop oil leaks and maintain oil pressure
- Clean or replace fuel injectors and fuel filter to ensure proper fuel delivery
- Regular oil changes with recommended grade to maintain engine lubrication

Prevention:
- Maintain regular coolant flushes and use the correct coolant type to prevent overheating
- Follow scheduled oil changes and use high-quality oil to reduce wear and oil consumption
- Inspect and replace ignition components at recommended intervals to avoid misfires
- Monitor engine temperature gauge and address overheating immediately to prevent damage
- Keep the fuel system clean by using quality fuel and periodic injector cleaning
- Regularly check for leaks and unusual noises to catch issues early before they worsen

By following these diagnostic steps and maintenance tips, owners of Nissan Terrano II 2.4 2WD and 4WD models with the Z 24 engine can ensure reliable performance and longevity.