Where is the low pressure charging port for a 1986 Toyota four cylinder truck?

The low pressure charging port for a 1986 Toyota four-cylinder truck is typically located on the larger of the two A/C lines, which is the suction line. This line usually runs from the evaporator to the compressor, and the port is often found near the compressor itself. Look for a blue or black cap on the line, which indicates the low pressure service port. Always ensure the vehicle is off and depressurized before attempting to service the A/C system.