Why does the Teana not start and the brake pedal feels hard?

[VonAdalynn]

The Teana fails to start and the brake pedal feels hard because the vacuum booster pump is required to assist when pressing the brake. If the vacuum booster pump lacks assistance, the brake will have no power assist, making it difficult to press down. For the vacuum booster pump to generate assistance, the car's engine must be running so that the pump can create a vacuum. Engine carbon buildup: This failure to start is mainly caused by excessive carbon buildup in the idle speed motor, intake tract, intake valves, and combustion chamber. Excessive carbon deposits and dirt in the intake tract alter the cross-sectional area of the air passage, leading to an overly rich or lean air-fuel mixture. This results in abnormal combustion, engine shaking after starting, or even a complete failure to start. Fuel injector leakage: The Zotye T600's failure to start may also be due to issues with the fuel injectors, such as leakage or excessive carbon buildup, causing a lean air-fuel mixture during startup and making it difficult to start. Additionally, when the carbon canister or carbon canister solenoid valve malfunctions, it can also lead to difficulty in starting.