speedfight rear brake

[gsac44]

when i first bought the bike the rear brake would not build pressure up whilst bleeding. so i replaced the caliper, still wont bleed, replaced the master cylinder still wont bleed. so what else could it be? is the hose the last thing i could replace or could it be something else that i dont know about? im not exactly a moped mechanic u see
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Peugeot Speedfight 2 Furious

[Dr. Quack]

I’ve just done my break literally 5 mins ago.
When you bleed brakes you release the nipple with a spanner roughly 1/2 turn or more anti clockwise > press rear brake pedal all the way down > as soon as the brake is pressed to the bottom tighten the nipple closed > while the bleed nipple is closed allow brake pedal to rise > release bleed nipple 1/2 turn or more again > press brake pedal down > tighten nipple > keep repeating the same process keeping an eye on the brake fluid reservoir. Repeat the process till all the air bubbles are out of the system.

A quick way to check the brake cylinders > take whole brake unit off > widen the brake pads apart with a butter knife running it between the pads > press the brake pedal to see if the cylinders force the brake pads back together.

Also check if the brake pads are worn down?

[andys675]

rear calipers on peugeot scooters need backfilling with a syringe and some tubing through the bleed nipple