Mirage Sedan LS L4-1834cc 1.8L SOHC MFI (1999)
Refrigerant: Testing and Inspection
SIGHT GLASS REFRIGERANT LEVEL TEST
The sight glass is a refrigerant level indicator. To check the refrigerant level, clean the sight glass and start the vehicle engine. Push the A/C button to
operate the compressor, place the blower switch to high and move the temperature control lever to max cool. After operating for a few minutes in this
manner, check the sight glass.
1. If the sight glass is clear, the magnetic clutch is engaged, the compressor discharge line is warm and the compressor inlet line is cool; the system
has a full charge.
2. If the sight glass is clear, the magnetic clutch is engaged and there is no significant temperature difference between compressor inlet and discharge
lines; the system has lost some refrigerant.
3. If the sight glass shows foam or bubbles, the system could be low on charge. The system should be checked for leaks, evacuated and recharged
with refrigerant.
