Hello, I need help quick with a serious prob i am having. The other day i decided to adjust my idle air bleed screw and idle speed screw and now my car consumes a massive amount of gas. For instance i drove maybe 1 mile if not a bit more and when i came back home it had consumed 1/4 of the tank of fuel I was like wtf this has got to be wrong i let it sit and the next morning it was the same. So i decided to take it out again and see what would happen and the same thing happened. Also after I adjusted those 2 screws the car started making this weird diesel/truck sound whenever i would hit the gas in 5th gear at about 50-60 mph. If anyone could give me some advice on what to or where to set those 2 screws so i dont use so much gas. I have to take a 180 trip this weekend and cant be using that much gas. Thanks for any help


P.S. I have an 86 z28, 350, 4 bbl quadrajet, 5 speed original t-5