Hi all-
I am beyond frustrated at this point. I've now replaced my front and rear calipers, discs, and pads. I did the fronts two weeks ago, and they bled just fine. I just did the rears this weekend.
I can't bleed the rears to save my f%&king life.
I have a hand-held vacuum pump to draw fluid through at the bleed nipple. It holds vacuum perfectly on its own (like, put my finger over the end of all the tubing). Problem is when it goes on the nipple it lets a bit of air in and I can't get it to make a tight connection. So, that's problem #1, but I don't know if it's my entire problem.
I got fed up with the hand pump and had my wife pump and hold the brake pedal while I then opened the bleed nipple, closed it, then she let off the pedal. I then come to read more closely in my Bentley that you shouldn't press the pedal to the floor on high mileage e30s (LOL isn't that all of them?!) because you may damage the master cylinder.
Turns out, she was pushing and holding the pedal at the floor. We tried again with her pumping about 15 times (this is an ABS car) and holding, open bleed nipple, close nipple, she lets off. No dice.
At this point, with the car off the pedal is hard-ish. I can still press it down as it feel like they're air in the system. If I turn the car on, pedal goes straight to the floor. Zero resistance. I've looked for fluid leaks and bulging hoses and everything looks okay there.
I'm about to (tomorrow) run up to Bavarian Auto to get their pressure bleeder (https://www.bavauto.com/mini-brake-p...e-bleeder-0100) because I feel like that will be WAY more reliable than the vacuum bleeder.
Question is, is it possible I've damaged the master cylinder? No idea if I've damaged it or anything else. Or, there's just a shit ton of air in the system that the pressure bleeder will help with.
HELP! So GD frustrated. Been trying to bleed it for hours. Thanks!
I am beyond frustrated at this point. I've now replaced my front and rear calipers, discs, and pads. I did the fronts two weeks ago, and they bled just fine. I just did the rears this weekend.
I can't bleed the rears to save my f%&king life.
I have a hand-held vacuum pump to draw fluid through at the bleed nipple. It holds vacuum perfectly on its own (like, put my finger over the end of all the tubing). Problem is when it goes on the nipple it lets a bit of air in and I can't get it to make a tight connection. So, that's problem #1, but I don't know if it's my entire problem.
I got fed up with the hand pump and had my wife pump and hold the brake pedal while I then opened the bleed nipple, closed it, then she let off the pedal. I then come to read more closely in my Bentley that you shouldn't press the pedal to the floor on high mileage e30s (LOL isn't that all of them?!) because you may damage the master cylinder.
Turns out, she was pushing and holding the pedal at the floor. We tried again with her pumping about 15 times (this is an ABS car) and holding, open bleed nipple, close nipple, she lets off. No dice.
At this point, with the car off the pedal is hard-ish. I can still press it down as it feel like they're air in the system. If I turn the car on, pedal goes straight to the floor. Zero resistance. I've looked for fluid leaks and bulging hoses and everything looks okay there.
I'm about to (tomorrow) run up to Bavarian Auto to get their pressure bleeder (https://www.bavauto.com/mini-brake-p...e-bleeder-0100) because I feel like that will be WAY more reliable than the vacuum bleeder.
Question is, is it possible I've damaged the master cylinder? No idea if I've damaged it or anything else. Or, there's just a shit ton of air in the system that the pressure bleeder will help with.
HELP! So GD frustrated. Been trying to bleed it for hours. Thanks!
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