I need some help. I ran the codes about a week ago and came up with 94 and 44 which i was told were vacuum leaks. I also believe it is a vacuum leak because i have a high idle (1000) and it surges a little. When i open my driver door i can hear a sucking sound and i looked at the vacuum tree. I need to now where the tube thats labeled s/c goes. I see that it goes into the fender, but then i looked under the car and i dont see anything. What should i do to check for vaccum leaks? use water or some oil on the tubes? also would a vacuum leak affect gas mileage? thanks.