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What Causes Hard Braking Due to the Focus Intake Manifold?

1 Answers

ErinLynn

07/25/25 1:37am

Hard braking in a car could be due to a lack of necessary maintenance on the braking system, excessive impurities in the brake master cylinder, poor sealing, failure of the vacuum booster pump, contaminated brake fluid, or the formation of vapor lock when different types of brake fluids are mixed and heated, leakage in the brake master cylinder or wheel cylinders, or air leaks in the air reservoir or pipe connections. Below are the related causes: 1. Leakage or malfunction of the car's vacuum booster pump: The force applied to the brake pedal is amplified by the brake booster pump. If it fails, the braking system loses its main power source. 2. Pressing the brake after the engine is turned off: This is also related to the brake booster pump. The brake booster pump continuously generates vacuum only when the engine is running. When the engine is off, it relies on the residual vacuum stored previously, which typically depletes after a few presses. However, this condition is restored upon engine restart and is not considered a malfunction.

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