when i drive for a short distance my brakes get a little hard and makes it a little hard to take off and it goes away then comes back??wtf?can anyone help me out!I tried to get it checked but when i take it,it doesn't do it?

 

Sounds like the pistons are getting stuck. Do a disassembly and check for it.

 

but i changed capliers and brake lines a while back and still have the same problem

 

the piston is inside the capiler right??

 

Why don't you locate the problem first? Get the car off the ground and figure out which corner(s) is/are sticking. Then go from there. You need to do a lot more diagnosing yourself before someone can give you any kind of helpful information.

 

i think is the front driver

 

So why don't you check if that caliper is seized?