I am experiencing a serious problem with what I think is air in my lines. I will bleed the entire system and the car is just fine. Then two days later the brakes will pulsate and hop when applied. I check for leaks underneath and nothing. If I continue to drive like this I have to put fluid in every two weeks. Any help would be great fellaz.
Thanks a ton

 

I can't say for sure, but I'd bet dollars to doughnuts that you've got a bad rear wheel cylinder. If the fluid is dropping, it's either leaking or evaporating (and brake fluid doesn't evaporate). The brake fluid makes the drum brakes grabby, which causes premature lock-up, and triggers the ABS.

If the fluid is dropping, it's going somewhere. There's a leak someplace. It's just a matter of finding it.

-Joe

 

I've seen master cylinders leak out the front into the vacuum booster, then the fluid is sucked in the engine and burned, thus no leak found on the ground. Check the booster vacuum line for brake fluid residue. Not sure why the vehicle would hop from this.
Hope this helps.

 

Thanks a ton fellaz! I will check it out.
Jeff

 

Indeed, I've seen the same, but it doesn't explain the hopping. Sticky brakes from a leaky wheel cylinder would explain the symptoms.

-Joe