What causes bubbles in the master cylinder

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Brakes got spongy and then went completely out. The left rear wheel cylinder was leaking fluid. Replaced the wheel cylinder, still no breaks. Once i use a break vacuum pump to pull the air out of the lines, had breaks for minute now no breaks. But notice bubbles coming up in the Reservoir. What can be the problems causing the bubbles in may not having no brakes?

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in Everett WA

·

Sep 12, 2021

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1 Reply

Popular Answer
DaveJMon Sep 12, 2021

Hello - must be air in the brake system? Hard to say without hands on testing being performed. Your process to remove air may not be successful. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops

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