Please can you advise me how we can bleed the brakes on a V78 that is stuck out in the middle of nowhere after a brake pipe burst, I have tried all the normal methods but the brakes still feel like they are full of air.
U need two people in order to bleed brakes one person pumps the brake pedal 6 times and holds it down until the other person unscrews the small bolt on the brake caliper and when the pedal sinks all the way down the other person screws back the caliper screw not too tight then repeat the same process 10 times until the brake feels right.
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Always start from the longest brake line and work your way to the shortest. There are several methods. Pedal pumping, Vacuum draw bleeding, gravity bleeding, and Power bleeding with a pressurized cylinder.
If you have never bled a brake before, you should probably try to watch a Video on YouTube or some other media. Some autoparts stores have CD's on various repair subjects. They cost about $8-$10.
If you have never worked on brakes before, it is something you should watch someone do before trying it yourself. There are some repairs which do not require bleeding. I advise people that unlike many repairs on a car, you might cause an accident if the brakes do not work correctly.
IT appears that only half of the master cylinder has bled properly. Try loosing the pipe nuts at the m/cyl and gently pump the pedal until you get fluid out of both lines. Then re-bleed the system starting at the longest line first ending at the shortest. Some master cylinders have a plunger fitted in the middle of the cylinder and this is there to still have brakes if a line fails. It may be necessary to remove it an plug the hole temporarily while you bleed the system as to stops one piston in the cylinder from moving and allowing proper bleeding
your probably going to have to bleed the entire system.1st try & bleed the master cyl. basicly the same as you would bleed the front/rear brakes. pump pedal & hold while someone loosen the brake line on the master cyl. after m/c is bleed move to r/r,l/r,r/f,l/f wheels in that order. if you have abs brakes & you got air in the pump a scan tool may be needed to bleed properly.
are you getting air out of the bleed nipples at the wheels ? if you getting a good flow of brake fluid at the wheels then sounds like there air stuck in the abs pump, First try bleeding the brakes again with the engine running and under load with some1 pressing the brake pedal on and off . If you still not have a very good pedal crack the brake pipes off at the abs pump just very slightly just enough for the fluid to flow out and repeat the bleeding process again with some1 pressing the pedal on and off and that should sort the problem out . please feel free to ask any questions thanks
You must still have air in one of the pipes - not necessaryily only to the wheel you have been working on (though normally that is so). Did youu make sure that the fluid level remained above minimum in the brake fluid master cylinder while you were bleeding the brakes? Possibly a slurp of air went in there and now the other pipes will need bleeding too. Don't panic - just bleed all the brake pipes, making sure that the master cylinder level stays high.
NOt really start at fron driver with resivoir cap off and have another give 3 slow steady pumps on the brakes you tightening the vavle back up in the middle of the third mover yer way around the car...pump brakes well after you are donw wit hall 4, if you changed all 4