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Unclogging master cylinder port

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Any ideas on how to unclog the tiny intake port inside the rear master cylinder. Ive cleaned and soaked in brakleen, blown out with 160psi compressed air, soaked in carb cleaner, tried extremely small wire with hemostats, boiled in water for 15 min. Still clogged. The plunger is unable to pick up fluid because of clogged port. Im referring to tiny port above the larger port. Im about ready to just spring for a new master. Any ideas would be appreciated. Thx

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Have you tried the old soak it in Coca Cola trick? Maybe use that and an ultrasonic jewellery cleaner.

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I will try the coca cola and then run it down to the ktm shop where they have a giant sonic cleaner for air filters and such. I will try anything about now. Thanks for the idea.

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