i have a 1991 chevrolet silverado 1500 with the 350 in it. its been having what seems to be a vacuum leak.. i noticed that the vacjuum line going from the vacum canister to the fuel system, has a bnig crack in it.. i repaired the crack/vacuum leak. now, my quiestion is, even though its a line copming from the vacuum canister, is it possible that it either de-pressurized the fuel system by that leak, or that there is now just too much air in the system?

 

It probably is supply line to the purge canister