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OK. I discovered a leak on my back right rear caliper. I replaced it but forgot to plug line and the rear of the MC went dry. Today I started by gravity feeding brakes. Did this for about an hour. Then dad came over and did the 2 person bleed job. The brakes never firmed up. Pedal going to floor. I did notice bubbles in the front chamber of MC, is this normal?
we bleed for over an hour. Never improved. I am lost. Could it be bad MC?
This is a non power brake 72.
OK. I discovered a leak on my back right rear caliper. I replaced it but forgot to plug line and the rear of the MC went dry. Today I started by gravity feeding brakes. Did this for about an hour. Then dad came over and did the 2 person bleed job. The brakes never firmed up. Pedal going to floor. I did notice bubbles in the front chamber of MC, is this normal?
we bleed for over an hour. Never improved. I am lost. Could it be bad MC?
This is a non power brake 72.
Thanks
Joey
If the rear went dry, you may need to bench bleed (or on the car) bleed the master first, then follow with the wheels. You may also need to raise the rear of the car to get all of the air out when gravity feeding. My 70 had been sitting for years when I got it with at least one leaking caliper - so no pedal. it took multiple sessions to finally get the pedal up and firm. Tough to get the air and old fluid all out. I had bubbles in the master for quite a while and only later read about bleeding it first.
The master is probably fine. It just can take a very long time to get all of the air out of the brake system in these cars once it enters in any quantity. A vacuum bleeder (I use a manual one) can save you serious time, and they cost <$100 if you can spare it.