I have a 91 toyota celica GT hatchback, (stick shift), and I just did an oil change on it. It ran fantastic for about 30 miles and then the clutch pedal started to stick. It started to have lag at first, not poping up for a while, and then it would not pop up on its own at all, and I had to use my foot. by the time I got home, it was so sticky that it would not shift properly (1st gear and reverse especially). What is the problem?