Pressure Test (Bench)
WARNING: This page is about a different car, the 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Due to space limitations, a bench test may be necessary for pressure testing.
- Remove heater core from vehicle. See HEATER CORE under REMOVAL & INSTALLATION.
- Drain all of coolant from heater core.
- Install a short piece of heater hose, about 4" (101 mm) long, on each heater core tube. See Figure.
- Install Plug (BT-7422-B) on one hose end and Adapter (BT-7422-A) on other hose end. See Figure. Secure hoses, plug and adapter to hoses with hose clamps. Attach pump and gauge assembly from a radiator/heater core pressure tester to adapter fitting on heater hose. Close tester bleed valve and apply 35 psi (2.5 kg/cm2 ) air pressure to heater core.
- Submerge heater core in water. If a leak is observed, replace heater core.