Vehicles using 13B-MSP engine list:

Engine 13B-MSP

Symptoms:
- Engine flooding and difficult cold starts
- High oil consumption and blue smoke from the exhaust
- Poor fuel economy and reduced power output
- Overheating and coolant leaks
- Rough idling and misfires

Diagnosis:
- Check for worn apex seals and rotor housing damage causing compression loss
- Inspect ignition coils and spark plugs for wear or fouling
- Examine fuel injectors for clogging or leakage
- Verify cooling system integrity, including radiator, hoses, and thermostat
- Perform a compression test to assess rotor seal condition

Fixes:
- Replace apex seals and rotor seals if compression is low to restore engine performance
- Change spark plugs and ignition coils to ensure proper combustion
- Clean or replace fuel injectors to maintain fuel delivery
- Repair or replace faulty cooling components to prevent overheating
- Regular oil changes with high-quality synthetic oil to reduce oil consumption and deposits

Prevention:
- Use high-octane fuel to prevent knocking and improve combustion efficiency
- Warm up the engine properly before driving to avoid flooding and premature wear
- Maintain regular oil and coolant changes following Mazda’s recommended intervals
- Avoid prolonged idling and aggressive driving to reduce stress on the rotary engine
- Monitor engine temperature and address any overheating issues promptly to prevent damage