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Master cylinder replaced, now a buzzing sound when I press the gas - SOLVED

Thread author jfuller40
Start date Jan 14, 2022

jfuller40

New member

Jan 14, 2022

I have a 2012 Genesis Sedan and I just had my master cylinder replaced at a mechanic shop. It fixed my braking issue but now there is a buzzing sound when I press the gas. It sounds like a cell phone ringing on vibrate and it is coming from where the master cylinder is in the engine. Any ideas?

Update - the mechanic forgot to put the seal around the MC. Pump was compensating for the air leak.

Last edited: Jan 14, 2022

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