how do i stop the brake pedal dropping on my fiat punto sx 85 16v?

how do i fix the problem on my fiat punto sx 85 16v my brake pedal is dropping and causing my brake lights to stay on all the time my brake master clyinder has just been replaced and had to have alot of air taked out of the braking system and my brake pedal was pressed many times i think this may have caused problem??
jamie hayden, January 2005


done
Sounds like brake system needs to be bleeded and rechecked for leaks

bg, November 2005
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