toobroketoretire
Banned
I have always gravity bled my brakes and have never had a problem. Many folks have a LOT of problems because they don't do it right:
1. The master cylinder lid must be off and kept at least 90% full during the bleeding process
2. The bleeder screw can't be plugged with debris so take it all the way out and clean it if necessary before trying to bleed
3. Bleed until the fluid coming out is a steady drip drip drip drip drip drip drip drip drip drip drip drip about 1/2 second apart
4. In the cold winter months it can take 30 minutes or more for fluid to begin dripping out the rear bleeders if the lines are empty so be patient
5. If you don't have the patience to wait 30 minutes use a Mighty Vac to suck on the bleeder screw and you can have fluid flowing within 15-20 seconds
If you have a Mighty vac its not necessary to bench bleed a new master cylinder because the suction of the Mighty Vac will do the job very quickly. Just remember to use the Mighty Vac on the front bleeders AND the rear bleeders because the master cylinder has two reservoirs. For the early C3's with the adjustable master cylinder push rod make sure the rod is adjusted short enough to allow about 1/2" of pedal "free play" before the master cylinder piston gets pushed. That ensures the pistons can fully retract so the upper reservoir can feed the piston bores.
1. The master cylinder lid must be off and kept at least 90% full during the bleeding process
2. The bleeder screw can't be plugged with debris so take it all the way out and clean it if necessary before trying to bleed
3. Bleed until the fluid coming out is a steady drip drip drip drip drip drip drip drip drip drip drip drip about 1/2 second apart
4. In the cold winter months it can take 30 minutes or more for fluid to begin dripping out the rear bleeders if the lines are empty so be patient
5. If you don't have the patience to wait 30 minutes use a Mighty Vac to suck on the bleeder screw and you can have fluid flowing within 15-20 seconds
If you have a Mighty vac its not necessary to bench bleed a new master cylinder because the suction of the Mighty Vac will do the job very quickly. Just remember to use the Mighty Vac on the front bleeders AND the rear bleeders because the master cylinder has two reservoirs. For the early C3's with the adjustable master cylinder push rod make sure the rod is adjusted short enough to allow about 1/2" of pedal "free play" before the master cylinder piston gets pushed. That ensures the pistons can fully retract so the upper reservoir can feed the piston bores.
