- Feb 4, 2017
probably been asked a million times so here goes a million and one. has anybody used the canister vapor return line as a fuel return line? 81 malibu, canister is long gone and line has been plugged off with a cap. getting pressure creep from 5.5 at cruse to 10 at idle with unknown age of carter pump. would like to stay with mechanical pump and regulate it to 5.5.