Join Date: Apr 2012
Location: Fort Wayne Indiana
eMrock32 is offline
Re: Can't get air out of brake lines after hours of bleeding...
Couple of tricks I have. I work at a shop so its easy for me since I have multiple tools to push it out. Doesnt help at home. I have 2 tricks that will most likely apply to you. One costs money.
1st trick, you might have air in the ABS line. Since you have no scanner to command the pump to run, you need to do it manually. If the truck can drive without crashing into something, find some gravel. You need to make the ABS come on by slamming on the brakes and allowing the system to pump and purge. This will move more fluid out into the lines and hopefully air is in there somewhere.
2nd, Harbor frieght vacuum pump. Usually on sale for 15-20$ and they can be a life saver. I have used both just the regular pump, and the one that might be more expensive, but its for specifically bleeding brakes. Both do about the same but the regular pump can be a slight hassle to put a few lines together to go small enough to clamp onto the bleeder screw.
Usually the pump method requires 2 people. You can have one person holding the brake pedal down (usually not enough power for it to be up) and one will pump for a few seconds doing the same rotation sequence. Just make sure you check your fluid every time yyou switch tires.
You can pump as much fluid out as you would like which I usually pump out alot. This is basically doing a brake fluid flush as well so you wont have to worry about it later. Once you see cleaner fluid you should be good to go. If you still have a problem, its your master.
I have seen masters go out multiple times just randomly doing a quick and easy pad slap. You can mess up some worn seals by pushing the piston back into the caliper.
With this information, you should be able to get it. Its going to require some work, but this should eliminate any air in the system, or any other problems the trucks braking system has.
-98 S10 Wagon (cut through) 3-4 drop w/ spindles, springs, shocks, and blocks. 325,000 on body fresh motor rebuilt by me. 2.2 with CAI, cavalier cam, exhaust. WS6 Wheels
-72 Monte Carlo. Mostly restored. 350 numbers matching 3 speed trans. More restoration happens every weekend.
-95 Nighthawk Street fighter. Mirrors, and turn signal delete. Radioshack jet kit. Bored stock pipe. CAI. 11.6 1/4 mile