I have got a Peugeot 406 lx hdi 2002 model and the clutch pedal is occasionally sticking down when pressed. It does not do this all of the time only once or twice a week. The only way to lift it back up again is to put your foot underneath it and lift it back up. I have looked for somwhere to oil or grease the pedal but I cannot see anything obvious. Please help !!!!!!