B4000 V6-4.0L SOHC (2005)
3. Connect the 101 mm (4 inch) test heater hoses with plug and adapter to the core tubes. Then connect the radiator/heater core pressure tester to the
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.
