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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 50 (Engine Controls - Theory & Operation - 3.3L CNG) >> Fuel System >> Fuel Delivery >> Fuel Cylinder Control Valves

Fuel Cylinder Control Valves

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.

Each fuel cylinder is equipped with its own manually operated fuel control valve. The fuel control valves are equipped with a pressure relief device. The pressure relief device is designed to release excess cylinder pressure to atmosphere if temperature increases to more than about 217°F (103°C).

Turn fuel control valve handle fully clockwise to stop gas flow. Turn fuel control valve handle fully counterclockwise to provide gas flow.