Liquid Check Valve

The liquid check valve permits free passage of vapors from the fuel tank, but prevents liquid fuel from reaching the canister. If liquid enters check valve, the float rises, forcing the needle into its seat.

Fig 1: View of Charcoal Canister and Hoses

Courtesy of AMERICAN MOTORS/RENAULT CORP.

Spirit and AMX models do not require a liquid check valve. The fuel tank on these models includes a large air space at the top which prevents liquid fuel from entering the vapor system. Concord and Eagle models use a liquid check valve mounted in the vent line.