After replacing the front break pads on my 85 nissan p/u, the line pressure is almost non exsistant, until U pump the break a couple times.....I tried to bleed the front and rear lines with no improvement...What else could it possibly be???

air in system push break down look for bleeder on check valve if not break line loose at check valve retighten . pump break don t fix push pedal loosen another line tighten back check again

When bleeding a break system have one person pump the breaks around 10 times and hold the pressure to the break peddle while the other person loosens the bleed screw......The peddle will then go to the floor..............Hold to the floor until the bleed screw is tightened again and repeat until no air is in the line............Repeat for all breaks and always check the master cylinder for low fluid level and top up.................Hope this helps you out.

You are either low on brake fluid or you have a vacum problem. It is a long shot but possible the Master Cylinder is having an issue or an air bubble in the system. Start the vehicle and make sure it is blocked. With the engine running perform system bleeds on all four calipers. Pump 3 times then release bleed valve. You are going to need a couple bottles of brake fluid to bleed all these calipers and get the air out of the lines. You should make sure the primary vacum is connected to the master cylinder and that there are no leaks on any lines before you start the bleeding process.

If you put the lifetime pads they are much harder and although you will get extended life the pads have a tendency to squeak try getting in a empty parking lot and put a little pressure on the brake pedal while backing up a few times it sometimes helps but is only temp, I prefer the non lifetime pads for this reason

You are not suppose to open the bleeders when replacing the brake pads.After pad removal you compress the pistons into the calipers and install new pads after cleaning and lubing the slides.Then just pump the pedal til it comes back up.Usually takes about 3 or 4 pumps.Make sure you didn`t break a brake line.If there were any problems with the anti lock brakes the light would come on.Hope this helps.Let me know.Good luck.

small end of valve goes in first then spring might also be hydro lock jack front wheels off ground Carefull level surface wheels blocked car supported then fill pump with fluid turn wheels left & right to full stops couple of time with eng off to purge air ck fluid again then see if pump works

first off, you need to buy the break pads, break caliper spreader, and you need to know if the bolts have a allen wrench head or a torques head, you can find that out by turning your wheel all the way to the left after you remove the front left tire, take a small hand mirror and look on the back side of the calliper, once you know what it is, you need the socket or wrench that fits it, remove the bolts, then the calliper will pull off by wiggleing it off, then remove the outside pad, take the break calliper spreader and place it the way the break pad sat and screw it pushing the calliper cylinder back as far as possible, then take the calliper spreader off and remove the other pad, install the new pads into the break calliper and replace the calliper back onto the router, (the round disc the calliper was on) line up the holes on the calliper and replace the bolts.......once you have put the calliper back on you must pump the peddle untill they are hard again, about 3-6 times or untill you cant go to the floor anymore. once they are solid again, replace your tire and you should be good to go.....................hope this helps.

Doesn't sound like the brake lines were bled properly. Many times after pad and rotor installation if the lines are bled correctly you will have to pump them initially after the repair for a couple of minutes until the pressure is built back up. Also check the master cylinder and make sure fluid level is ok.

hi , your caliper pistons are not retracted all the way in , use 1 of the old pads against the piston(s) use a big channel locks or big c clamp , open the bleeder screw , compress the piston(s) back in all the way , lock the bleeder screw , when calipers are reinstalled , don't forget to pump the pads out with the brake pedal before your throw it in gear , because the first couple of brake pedal strokes will reset the pads to the rotors . then recheck the brake fluid level .

J5

parts at napaautoparts.com are from 54 to 42 for the front pads. look the rest up chum