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Home >> Mazda >> 2007 >> B4000 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 552 (Cooling System) >> Engine Coolant Flushing - 2.3L >> Heater Core

Heater Core

WARNING: This page is about a different car, the 2007 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. See ENGINE COOLANT REPLACEMENT - 2.3L  .
    Fig 1: Removing Radiator Cap
    G04307797Courtesy of MAZDA MOTORS CORP.
    WARNING:
    • Do not open the cooling system while it is hot or while the engine is running.
  2. Back flush the heater core.
  3. Fill the cooling system. See ENGINE COOLANT REPLACEMENT - 2.3L  .