Why is the brake pedal of Haval H6 hard to press?
2 Answers
Automobile braking system is a hydraulic system. The following are the reasons why the brake pedal is hard to press: 1. Malfunction: The vacuum booster pump of the car is leaking or malfunctioning. It's important to know that the force we apply to the brake pedal is amplified by the brake booster pump. If it malfunctions, the brake loses its booster assistance, making it difficult to press. 2. Loss of resistance: Pressing the brake after the engine is turned off is related to the brake booster pump. The brake booster pump only continuously generates vacuum when the engine is running. When the engine is off, it relies on the residual vacuum assistance, which usually disappears after a few presses but will be restored after starting the engine, indicating it's not a malfunction.
I remember once driving a Haval H6 when the brake pedal suddenly became rock-hard and unresponsive, giving me quite a scare. This is often caused by a failure in the vacuum booster system. Since the H6 uses an electric vacuum pump to reduce braking pressure, if the pump fails or there's a leak in the vacuum line, the power assist is lost. Additionally, insufficient brake fluid or air entering the lines can also make the pedal stiff. That time, I gradually slowed down and pulled over, only to find the fluid level was low. Later at the repair shop, I learned a small clip had come loose, causing a slow leak. Long-term neglect of maintenance, like contamination from oil or wear, can lead to even bigger risks. Never force the car to keep moving – stop immediately to check fluid levels or visit a repair shop. Regular brake fluid changes can prevent such issues proactively.
