Cooling System
4 guides in this section.
Coolant flush & refill
NB1/NB2 coolant drain-flush-refill procedure with conservative bleeding checks and mixture planning when some old coolant remains in the block.
- Difficulty:
- Intermediate
- Time:
- 1.5-3 hours
Radiator inspection (fins, tanks, leaks)
Routine radiator condition checks for MX-5 NB to catch aging plastic tanks, fin damage, and early coolant leaks before overheating events.
- Difficulty:
- Beginner
- Time:
- 30-60 min
Thermostat replacement
Replace the thermostat on Mazda MX-5 NB safely, with emphasis on correct orientation, sealing surfaces, and careful coolant refill/bleeding.
- Difficulty:
- Intermediate
- Time:
- 1.5-3 hours
Coolant hose inspection & replacement
Inspect and replace aging NB coolant hoses with emphasis on leak prevention, clamp strategy, and careful refill/bleed checks.
- Difficulty:
- Intermediate
- Time:
- 2-4 hours