Evaporator Drain Tube: Testing and Inspection

With an otherwise properly operating A/C system, water sprays out of instrument panel vents

- Check evaporator drain pipe for proper routing (should not be kinked or pinched).

- Check evaporator water drain valve.

- Must not be plugged with wax, dirt or undercoating (clean if necessary).

- Valve flap must open/close properly.

- Check plenum tray.

- Must be properly installed and not damaged.