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**jayoldschool** · 09-10-2018, 07:01 PM

Seals against air/moisture.

OP: glad you found the issue. I went through the same thing. Get the 67 truck master. Replumb the lines. FRONT port on the master to the front brakes, one line down to the splitter that you can reuse. REAR port to the rear line, use a connector, not a compression fitting!

09-10-2018, 07:01 PM	#10
jayoldschool Moderator Join Date: Dec 2012 Location: ON, Canada Posts: 2,187	Re: Why is brake master cylinder empty? Seals against air/moisture. OP: glad you found the issue. I went through the same thing. Get the 67 truck master. Replumb the lines. FRONT port on the master to the front brakes, one line down to the splitter that you can reuse. REAR port to the rear line, use a connector, not a compression fitting!