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What to Do When the Car Won't Start and the Brake Pedal is Hard to Press?

2 Answers

OWalter

08/30/25 5:28am

It is likely due to a lack of vacuum assistance, and you may need to apply more force. Here are the possible reasons why the brake pedal is hard to press: 1. Leakage or malfunction of the car's vacuum brake booster: It's important to understand that the force applied to the brake pedal is amplified by the brake booster. If it fails, the brake will lose its assistance, making it difficult to press. 2. Related to the brake booster: Pressing the brake pedal after the engine is turned off is also related to the brake booster. The brake booster only continuously generates vacuum when the engine is running. When the engine is off, it relies on the residual vacuum assistance, but this will restore after the engine is started and is not a malfunction.

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NadiaAnn

09/12/25 2:37am

I found that the car won't start and the brake pedal is hard to press, which is usually related to a failed vacuum booster pump, causing the brakes to become stiff. You should first try pressing the brake pedal several times to see if it softens a bit, while checking whether the dashboard lights up when turning the key—if not, it's likely the battery is dead or there's an electrical issue. Don't force-start the engine, as it can cause more damage. I suggest first asking a friend to help push-start the car or jump-start it. If that doesn't work, contact a towing service directly. Brake failure at critical moments is very dangerous, so if the car is parked on a slope or on the road, immediately turn on the hazard lights and get out of the way. Afterwards, regular maintenance and checks on the brake booster system and battery charging can prevent many headaches.

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How to Adjust the Headrest of a Car Seat?

First, open the car door and enter the vehicle. You will see two protruding headrests on the driver's and front passenger seats. Next, locate the adjustment button for the car seat headrest. The adjustment button is usually located next to the two support rods of the headrest or on the side of the headrest. Then, when adjusting the headrest up or down, you need to press the button at the bottom of the support rods with your hand. Finally, while holding the button, adjust the headrest up or down to a height that suits you.

Do Spark Plugs Affect Car Fuel Consumption?

Spark plugs do affect fuel consumption. If a spark plug is damaged, it can directly cause an increase in the car's fuel consumption. Methods to determine if a spark plug is damaged: Remove the spark plug and observe its appearance. The condition of the spark plug can be judged based on the following color observations. A normal spark plug's insulator skirt and electrodes appear gray-white, gray-yellow, or light brown. A properly functioning spark plug has a reddish-brown insulator skirt, with an electrode gap between 0.8-0.9mm, and no signs of electrode burning. If the spark plug is covered in oil or deposits but is not damaged, it can continue to be used after cleaning off the oil and deposits. If the spark plug is severely damaged, with signs such as blistering at the top, black streaks, cracks, or melted electrodes, the cause of the damage should be identified. After troubleshooting, replace the spark plug with a new one. Additionally, if the spark plug appears black as if smoked, it indicates the wrong heat range was selected or the air-fuel mixture is too rich, with oil seepage. Steps to replace a spark plug: Open the engine hood and lift the plastic cover of the engine. Remove the high-voltage wires, marking each cylinder's position to avoid confusion. Use a spark plug socket to remove each spark plug one by one. While removing, check for external debris like leaves or dust and ensure everything is cleaned thoroughly. Place the new spark plug into the spark plug hole, hand-tighten it a few turns, and then use the socket to tighten it further. Reinstall the high-voltage wires according to the firing order, then secure the cover.

How to Adjust the Front and Back Position of a Car Seat?

Leave at least a finger's width of space between your head and the headrest to prevent head bumps during bumps. Also, ensure that your hands can comfortably reach the steering wheel and your feet can easily operate the accelerator or brake pedal. First, press the front and back adjustment button to push the seat backward, then test if you can comfortably reach the pedals. When pressing the brake pedal to the limit, your legs should still have a slight bend. Tilt the backrest slightly, but maintain a level line of sight. If there's a gap in your lower back, use a cushion. For additional tilt, add a headrest to keep your gaze level. If there are still any discomforts while driving, continue adjusting the seat.

What is the installation method for car seat covers?

Before installing the car seat covers, please check the quality of the seat covers, whether the stitching is sturdy, and if the length is appropriate. The front driver's seat cover usually has a headrest cover, which can be directly pulled down over the seat. Then, there is one or two buckles at the joint of the seat cover. Insert the buckles into the gaps of the seat by hand to prevent the seat cover from moving forward. Some buckles do not have small hooks but come with elastic bands. In this case, thread one end of the buckle through the gap and lock it with the other end. After installing the long seat cover, make sure to reset the seat belt. Insert the fixing clips of the long seat cover and backrest into the gaps, then smooth out the seat cover.

What to Do If the Small Green Book Is Lost?

When the motor vehicle registration certificate is lost, the owner of the motor vehicle should promptly apply for a replacement at the vehicle management office under the jurisdiction of the motor vehicle. Contact the original owner, who should personally drive to the vehicle management office with their ID card and driving license to apply for a replacement. The current owner must personally drive to the vehicle management office with their ID card and driving license to apply for a replacement. This is the only motor vehicle-related service that cannot be handled by a proxy. When applying, the owner of the motor vehicle should fill out an application form and submit proof of identity. For the replacement of the motor vehicle registration certificate, the motor vehicle must also be inspected. The vehicle management office should, within one day from the date of acceptance, confirm the motor vehicle, review the submitted documents and certificates, and issue a replacement motor vehicle registration certificate.

Is Transmission Fluid the Same as Gear Oil?

Transmission fluid and gear oil are not exactly the same. Generally, transmission fluid includes manual transmission fluid and automatic transmission fluid. Manual transmission fluid is collectively referred to as gear oil, while automatic transmission fluid has a higher grade and is also called drive fluid. Additionally, regular gear oil cannot be used in automatic transmissions. Transmission fluid is an oil product that keeps the vehicle's transmission clean, ensuring its proper operation and extending the lifespan of the transmission components. Gear oil is typically used in gear transmission mechanisms such as the steering gear, transmission, and drive axle of a car, differing from engine oil in terms of usage conditions, composition, and performance characteristics.

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