[Hrambler]

454 engine in a '87' Holiday Rambler motorhome, engine runs great except on some occassions after the engine is turned off gas will leak out of the (I think) it's the vapor recovery canister. There is one large canister with multiple hose connections with one of them going to a smaller canister filled with charcoal, which is where it leaks gas. Enigne has 4 barrel carb. Any help greatly appreciated.