I have a 91 s10 2wd 5spd with a 2.5 4cyl... i bought the truck with the brakes not working, it had a bad rear brakeline that was cracked right in front of the rear driver tire. and since this truck is going be a lowrider/mini truck, i want the least amount of things near the rear axle as possible because im going to eventualy do a 4link... so i tried to cap off the rear brakes completely by putting a bolt in the master cylinder where the line to the rear brakes was supposed to be. While checking the brake peddal for more pressure before bleeding the brakes, i discovered that when the truck is off the brake peddal builds up a little bit of pressure but then when i start the truck the brake peddal goes straight to the floor, iv also tried replacing the vacume hose and the conector/valve that plugs the vacume hose into the booster. i also noticed the brake light on my dash flickers as i play with the brake peddal or try to pump it to see if i can get any bit of pressure into the peddal well the truck is running but nothing happens, the peddal just continues to go to the floor. can you tell me whats wrong with my brakes or maybe what im doing wrong???? thanks

but i check all the brake lines and followed them all under the truck, the way my master cylinder and everything is set up. is the main actual master cylinder has two lines coming out of it and they go to like a lower splitter unit for some reason and only two lines still come out of that, one of them follows the frame and goes to a splitter thats mounted on top of the pumpkin on the rear axle an the splitter splits it into two lines going to each rear line.
then the other line coming out of the unit thing under the master cylinder goes to a splitter down by the driver side a-arm and has two lines coming out of it and going to both front tires, there not crossed like you said... is there a possibility i can get rid of that whole unit thing under the master cylinder and just cap off one of the two holes on the actual master cylinder and use the other hole for a line that goes to the splitter that that has two lines going to both front tires??? but i check all the brake lines and followed them all under the truck, the way my master cylinder and everything is set up. is the main actual master cylinder has two lines coming out of it and they go to like a lower splitter unit for some reason and only two lines still come out of that, one of them follows the frame and goes to a splitter thats mounted on top of the pumpkin on the rear axle an the splitter splits it into two lines going to each rear line. then the other line coming out of the unit thing under the master cylinder goes to a splitter down by the driver side a-arm and has two lines coming out of it and going to both front tires, there not crossed like you said... is there a possibility i can get rid of that whole unit thing under the master cylinder and just cap off one of the two holes on the actual master cylinder and use the other hole for a line that goes to the splitter that that has two lines going to both front tires???

but i check all the brake lines and followed them all under the truck, the way my master cylinder and everything is set up. is the main actual master cylinder has two lines coming out of it and they go to like a lower splitter unit for some reason and only two lines still come out of that, one of them follows the frame and goes to a splitter thats mounted on top of the pumpkin on the rear axle an then splits it into two lines going to each rear line. then the other line coming out of the splitter unit under the master cylinder goes to a splitter down by the driver side a-arm and has two lines coming out of it and going to both front tires, there not crossed like you said... is there a possibility i can get rid of that whole unit thing under the master cylinder and just cap off one of the two holes on the actual master cylinder and use the other hole for a line that goes to the splitter that has two lines going to both front tires??? because im thinking theres something wrong with the splitter unit thing under the master cylinder? but i check all the brake lines and followed them all under the truck, the way my master cylinder and everything is set up. is the main actual master cylinder has two lines coming out of it and they go to like a lower splitter unit for some reason and only two lines still come out of that, one of them follows the frame and goes to a splitter thats mounted on top of the pumpkin on the rear axle an then splits it into two lines going to each rear line. then the other line coming out of the splitter unit under the master cylinder goes to a splitter down by the driver side a-arm and has two lines coming out of it and going to both front tires, there not crossed like you said... is there a possibility i can get rid of that whole unit thing under the master cylinder and just cap off one of the two holes on the actual master cylinder and use the other hole for a line that goes to the splitter that has two lines going to both front tires??? because im thinking theres something wrong with the splitter unit thing under the master cylinder?