I have a 2000 7.3 and I have been having the worst gas mileage and I dont know what to do. I have a 26 gallon tank and I filled it all the way up one day and cost me $80. I set my trip and drove. I am slightly over a fourth of a tank and its saying ive only driven 100 miles! WTF! Thats like 3-7 miles per gallon. People say their tanks last them 600-800 miles but idk what the hell is wrong. I checked the EBPS and it had some soot but wasnt blocked and clogged so I just scrapped off what I could and put it back together. One caliper isnt working properly due to a line that needs replacing. my truck turns to the right when I brake so Its the front left caliper line that needs replacing. I just replaced all calipers on my truck so I know thats what it is but even a slightly sticking caliper wouldnt make my MPG 3-7 miles. I have a new set of 265/75/16R tires I put on in May or so, before that It had 285/75/16r tires and I dont know if that has anything to do with it, but still if that did have an effect on my economy it wouldnt make it this bad. What do yall think can cause this? Im going to sell my truck if I cant figure it out. I have a ts chip but only drive it on stock and 50hp+.