how can i fix my ford mondeo 2000 1.8 zetec gearbox?

try these 2 idea's
try putting the gears in without the engine running yes/no
then look check if you have a slave cylinder on the gearbox bell housing is it leaking .
get someone to WATCH the clutch push rod arm as you depress the clutch pedal ,if No movement suspect (clutch master cylinder rubbers failed)

if a cable clutch incorrect adjustment, or may have a plastic ratchet above the clutch pedal with missing/stripped teeth

wirecutterman
January 2010