Soon I'll be replacing my master cylinder and flushing the brake system. I plan on 'bench bleeding' the mc, and then use the Powerbleeder to flush the system. Before I begin any work on my car, I like to 'visualize' all the steps in the process, so I can anticipate where I may run into trouble. My question is regarding the Powerbleeder. The instructions say to fill the mc tank with clean fluid, fill the PowerBleeder, attach the cap and pressurize the tank, What about the air that will be in the Powerbleeder tube? Won't that be forced into the mc tank? I'm thinking the air will remain at the top of the mc tank and won't enter the brake system, but I don't know for sure. Am I obsessing over nothing? Thanks in advance for your help.
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