I have a 2000 civic si. The other day on the way to work the car was driving fine, then i could not shift into any gear while the car was running. turned the car off and it could shift fine. started the car again and it wouldnt go in gear. got the towed to my house, go to check to see if the clutch is disengaging by starting the car in gear, car slightly lurches forward. go to check one more time and car starts just fine in gear and shifts into all others. i dont see any leaks from my master cylinder either. i'm stumped.