A/C Compressor - External Leak Test
WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the evaporator outlet line spring lock coupling and the compressor-to-condenser discharge line middle fitting.
- Connect the appropriate test fittings to the evaporator outlet line spring lock coupling, compressor side and the compressor-to-condenser discharge line middle fitting, compressor side.
- Connect the high and low pressure lines of a manifold gauge set or a refrigerant recovery/recycling station such as the R-134a A/C service center to the corresponding fittings on the A/C Pressure Test Adapter.
- Attach the center hose of a manifold gauge set to a refrigerant container standing in an upright position.
- Open the low pressure gauge valve, the high pressure gauge valve and the valve on the refrigerant container to allow the refrigerant vapor to flow into the A/C compressor.
- Using the Refrigerant Leak Detector, check for external compressor leaks.
- If an external leak is found, inspect and install new as necessary the O-rings at the compressor line fittings. Retest the system. If the test again indicates a leak, install a new compressor.
- When the leak test is complete, recover the refrigerant from the compressor.