Keep Getting Air Bubbles
#1
Keep Getting Air Bubbles
I installed new front calipers and pads on a 1998 Lexus ES300. I keep getting plenty of air bubbles when I bleed the brakes. I am keeping the master cylinder filled, so I'm not sure where all of this air is coming from. The pedal keeps going to the floor. The booster is Ok. I'm thinking bad master cylinder. Ideas????.
thanks
thanks
#3
If the master was dry after replacing the calipers you should pre bleed the master... with the lines off have sombody SLOWLY push the pedal down then BEFORE they let up hold your fingers over the holes where the lines go and let up on the pedal... repeat this until no air comes out of the master... make sure you have rags and make sure your helper pushes the pedal SLOWLY
#4
Thanks for the reply.
I didn't change the master cylinder so I kept it full and continued to fill while I was bleeding.
I am having the helping push the pedal all the way and hold, then open the bleed screw and close it when all the air escapes, release the pedal. Repeat that step as often as air comes out, but even after a constant flow of fluid, on the next pump, more air.
I didn't change the master cylinder so I kept it full and continued to fill while I was bleeding.
I am having the helping push the pedal all the way and hold, then open the bleed screw and close it when all the air escapes, release the pedal. Repeat that step as often as air comes out, but even after a constant flow of fluid, on the next pump, more air.
#7
If the master was dry after replacing the calipers you should pre bleed the master... with the lines off have sombody SLOWLY push the pedal down then BEFORE they let up hold your fingers over the holes where the lines go and let up on the pedal... repeat this until no air comes out of the master... make sure you have rags and make sure your helper pushes the pedal SLOWLY
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