B4000 2WD V6-4.0L SOHC (2003)
adapter.
4. Apply 241 (35 psi) of air pressure to the heater core. Submerge the heater core in water.
5. If a leak is observed, replace the heater core.
Mazda Workshop Service and Repair Manuals
Heater Core|Testing and Inspection|Page 3236 >
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