Ok well ive got a 95 ex 4banger vtec. And my abs does not pressurize.
I hear the pump trying to work every time I start my car, it does its think
for a couple of minutes, then it stops and the abs light comes on my dash.

Is there any way I can refill that little tank, that little pressuring tank costs like
190 at the dealers. And no point of buying a used one, same thing will probably
happen.

 

First thing to do is look for leaks, then bleed the system. It is common for the check valves to go bad, but they are not available a single part.
the way to see if the check valve is bad is to bleed the system, then jumper the pump relay contacts let the pump run till you hear it get good pressure then shut it off. Then mark the fluid level of the reservoir and wait 5-10 minutes to see if the fluid level rises.

 

now when you say bleed the system, do you mean just bleed the brakes like regular, or
is there a whole other process for bleeding the abs unit?