I did same thing had back breaks bit no front noew i have none at all what do i do when.u push on the brake petal it sounds like nothin but air and goes to floor not shure what to do
Maybe it's your bleeding sequence.
1. Ensure all the bleeder valves are closed and wipe all fluid from your fittings.
2. Fill the master cylinder reservoir and have a helper keep pressure on the brake pedal. Pump it 5 times till there is some pressure, then hold. Tell them to tell you when it hits the floor.
3. Open the right rear bleeder valve while your helper maintains pressure. Close the valve when the pedal reaches the floor. Repeat until clear fluid with no bubbles comes out of the valve.
4. Repeat sequence for left rear, then right front, then finally left front.
Wipe all fittings and valves at the wheels and the master cylinder. Look at fitting on your ABS module to ensure they are tight and dry.
Pump the pedal and recheck your fittings to ensure they are still dry. A leak will kill you.
Anyway, that's how I do it. A note about ABS...ignore it while bleeding, it does not affect the procedure.
SOURCE: Brakes won't hold
Check to make sure you have no leak around the tires or from the pistons in the calipers. If all that checks out ok, then I would top off the brake fluid close the top and re bleed the brakes to make sure that you have all the air out. Also make sure that the master cylinder lines and booster lines are tight and no air is getting in.
SOURCE: how do you bleed the abs unit on a 1997 chevrolet truck
start by bleeding the master cylinder bleed the line closest to the fire wall, then proceed to the right rear wheel, left rear wheel, right front wheel, and then the left front wheel.
SOURCE: problem with bleeding my breaks
this sounds like a autozone master cylinder. all you can do is go get another one. the best way, and quickest way to tell if this one is going to work is to install the master onto the booster and bleed it there by filling it up, snugging the lines and having someone inside to push the pedal down, you open the line and watch the stream. as long as you dont see air like when you bleed at the wheels. if you cant get a lack of air, take that 1 back too. the only way to get one thats good right off the bat is to buy the ac delco part it calls for. the people who "rebuild" these other ones dont often measure the inside bore when they put it back together. ive gone through 5 one time. cheers.
SOURCE: I have a 1999 chevrolet
if the rear brakes are to loose it will cause the truck to have a low brake peddle, so it could be that you need to adjust up the rear brakes adjust them out till the wheel locks and then back off 3/4 to 1 turn. if the brakes are in adjustment then supect air trapped in the ABS unit try bleeding the lines at the ABS unit....GOOD LUCK
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