How do i fix the rear brakes ofmy mongoose mode 270 so that they work

SOURCE: brake lines are bad going to the rear end ofmy 94

you must replace the lines themselves, you CANNOT use a compression fitting and cut away the bad part,either replace the whole line or find a good spot cut and double flare the line so you can use a union fitting sorry no shortcuts

SOURCE: On my Mongoose i tred to fix a rear flat and when

1. You need to make sure the tube doesnt have more than one piercings [inflate the tube and, using a bucket of clear water, immerse it and observe any air outlets. if you have a pen or marker, mark them] 2. Make sure the valve of the tube really is tight enough. If it isnt, use a valve spanner to tighten it, but make sure you dont do it too hard, or else it will snap.
3. You'll need to check the tyre for any sharp objects that could have got stuck in it and are causing new punctures 4. You need to make sure that both the tube and patch are course enough to be glued to each other when you apply the contact adhesive to them. 5. When you apply the adhesive, depending on the brand, you wont need to 'immediately stick the two surfaces together, let a bit of fresh air dry them a bit, [this would imply waiting for minute or 2] then patch things up