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12-23-2019, 12:05 AM
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Senior Member
 
Join Date: Apr 2001
Location: Alexandria, MN
Posts: 1,462
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HELP! Cant bleed brakes!
Just replaced the master cylinder and proportioning valve on my 85 K20 suburban. Pedal had been inconsistent and based on a couple other threads I decided to pull a proportioning valve out of a parts 84 C20, and install it along with a new master cylinder since I had to bleed the brakes any way. Got everything all reinstalled, and I set up to vac bleed the system out. Started with the right rear drum, loosen the bleeder screw, pull 20Hg/in vacuum, and 0 fluid flow. WTF??? Ive bled alot of brakes and teach students how to as well, as a teach a basic autos class at times. Everything worked OK pulling it into the shop, but this has got me puzzled. Any ideas???
--Mike
__________________
63 C20 2WD, 230/SM420/4.11 73K 68 C30 dump truck, 327,SM425,4.56 66K original 68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes 68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79 69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi... 70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP 72 Chevy K20 4x4 350/350/205/4.56 donor 72 Vette 350/M21/3.70 posi, triple black and super fast 84 Olds Cutlass Brougham 350/2004r/4.11 was Dad's |
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