I hope you can clarify. I understood you had solid pedal with the booster off, including to the front calipers. Then, with the booster, it changed and ended up with low pressure at the calipers??
I want to make sure, because that is how mine acts and I am hoping you will figure this out. When I bleed it, with no booster, I can literally see and hear the front calipers squeeze hard and the pedal is good. I do not have a pressure gauge. Then, when I drive it and operate a few times with the booster working, the pedal goes to floor, and ends up with no brakes until the pedal is near bottom, but never completely goes to zero. I think this is the same for yours, right ??
I was trying to understand the way the combo valve worked, and thought I understood the front would not pressurize until the rear system had pressure. Based on this, I have been assuming my rear system is somehow losing pressure, and the combo valve keeps the front from pressurizing. If this is way off, somebody please explain how the metering and proportioning functions may or may not play a role in these symptoms ??
Thanks again.
|