ok on the top of the canister theres 2 vaccume/ pressuse pipes...one small and one large...the large one goes on the back of a little valve on the top and the small one goes on the other side of this....well some how ive lost the lid of this little valve hence both these pipes do nothing....just wondering should i block these off while i look for a new peice??
also will this afect my fuel consumption and the air/fuel ratios??