Evaporative Line Check
- Disconnect evaporative hose from canister. Connect detached hose to a "U" tube type pressure gauge filled with water. See Fig. 2.
Use "U" tube pressure gauge.
- Gradually apply low air pressure into "U" tube so that difference of water level reaches 14" (356 mm).
- Bind inlet of "U" tube and leave bound for 5 minutes. If water level drops no more than 1" (25 mm) after 5 minutes, evaporative line is in good condition.