OK I have a 90 Supra. For some reason it kept dying on me when ever i'd run it, but not immeditaly. It would run for bout an hour to two hours then start sputtering and die when i slowed down. After about an hour of trying to start it, it would finally start and i would race home so i wasn't stranded again. Now it won't start at all. I've changed so many parts on this car but it still doesn't seem to matter. I've changed oil, plugs, wires, cap, rotor, coil, fuel filter and pump, oil, oil filter, air cleaner, and even injectors. I just can't seem to figure the damn thing out. Has anyone ever had this problem? PLEASE HELP!!