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Brake help

NR92

NR92

New member
i just finished up a motor swap on my uncles 98 olds LSS, the car had been sitting for close to 3 years due to the motor going bad (UIM failular), i suspected issues after the swap due to the amount of time it sat, well sure enough the first time i take the car for a drive it blew out a brake line, i do not know much about brake systems so i avoid them at all cost, anyway i ended up replacing about 10 ft of brake line for the rear brakes, two lines that run from the abs control module to the rear of the car, anyway after i get everything bolted back together i top off the brake fluid get in the car and start pumping the brake, after some time of pumping the brake i had come to the realization that the fluid level in the reservoir has not gone down, i have yet to bleed the brakes because it seems at this point it would be a waste of my time

any help would be great
 


In order for hydraulics (brakes) to work properly you must bleed the air out of the lines. Because air compresses much easier than the fluid. If you don't bleed, you will compress the air and the brake pistons won't move. This will have a negative effect on hoping to stop.
 
if you replaced 10 feet of lines you have tons of air in the system, you need to bleed the brake, or you'll have no brakes like you do now.
 
well i completely agree with you guys, but the way im looking at it is if the master cylinder isnt pushing fluid into the lines then bleeding the brakes will do nothing, even with air in the system it should still be pushing some fluid in right? thanks for the replys i have much to learn with brakes
 
thats where your totally wrong, you need to open the bleeder on the caliper, to let the air out, its a closed system, it wont bleed its self, you need to bleed them all now.

if you dont know how to bleed the brakes ask, and ill tell you. the cheap way is a 2 man operation.
 


If there's air in the lines..that fluid isn't going to seem to go down. Because the air compresses instead of the brake caliper pistons moving.
 
It can't push any fluid in with all that air in the way. Grab a friend or a power bleeder and bleed them. Nothing will work until you do.
 
2 people. 1 pushes pedal, you open bleeder then close it. Person in car lets up on brakes and then pushes them down again. You open bleeder and then close it. Repeat a lot on each wheel.
 
lol ive bleed brake systems many times, the my issue was absolutely no peddle even with air in the system you get some peddle, i am rather embarrassed to say my issue was there was a 3rd blown line, it was spraying up the side of the transmission so when i looked for drips i didnt see any, i didnt see it until i had a buddy man the brake pedal, anyway i found out too late and couldn't make it to the parts store for more brake line in time :/ thanks guys for your time
 
you still need to bleed the brakes after your done fixing the lines.

id look over all the brake lines just be safe, nothing like needing them and poof they're gone. grill meet bumper.
 


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