1977 Models
Remove thermal vacuum valve from engine. Submerge valve in a container of water, and slowly heat container. Valve should open when water temperature is between 59-134°F (15-57°C). Valve passage should remain closed at all other times.
Remove thermal vacuum valve from engine. Submerge valve in a container of water, and slowly heat container. Valve should open when water temperature is between 59-134°F (15-57°C). Valve passage should remain closed at all other times.