hi i changed my dad's front right brake pads but accidently unscrewed the cylinder all the way and got some air in there. So now i changed the front left pad also and tried to bleed the two front brakes. When the engine is off the brake padel is really hard but when u turn on the engine, there is alot of travel in the brake padel before the brakes actually work. So my question is since the car has ABS do i also have to bleed the rear brakes (they are drums and not disks) ?? Or did i have to bleed the brakes while the engine was on since its ABS? any help is appreaited thanks

By the way, before i changed the pads there was no travel in the brake padel, the brakes were applied almost instantly THANKS!!

 

Hmmm

 

Yes, I would bleed the rear brakes too. A vacumme pump works great for bleeding brakes. When you use the brake pedal pumping method (and the brake fluid was old) you could be promoting master cylinder failure. Picture below

 

what is this vaccum pump u speak of? so lets say i use a "vaccum cleaner" and stick the hose in the engine bay where u put the brake oil and that would suck out all the air bubbles and old oil...right? then i would just add the new oil and i would be good to go? where can i get this vaccum pump? thanks