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What Causes the Abnormal Noise When the Front Shock Absorber is Compressed?

2 Answers

DiGraham

08/27/25 7:21am

The reasons for abnormal noise when the front shock absorber is compressed are as follows: Shock Absorber Malfunction: This is caused by the shock absorber colliding with the leaf spring, frame, or axle, damaged or detached rubber pads, deformation of the shock absorber dust cover, or insufficient fluid. Broken Shock Absorber Top Rubber: This indicates that the noise is caused by the front lower control arm rubber or a broken shock absorber top rubber, leading to a creaking sound from the front shock absorber. Function of the Shock Absorber: In the vehicle suspension system, the shock absorber always works in conjunction with the spring. When one corner of the vehicle body is compressed, it is actually the spring that is being compressed, while the corresponding control arm swings. When the body is released, the spring force causes the body to rebound, and the shock absorber dampens this rebound, helping the body stabilize after the rebound.

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LeAniyah

09/09/25 6:08am

I've been driving for over a decade and often encountered the issue of front suspension squeaking when compressed. Most of the time, it's due to worn-out or aged rubber bushings, which are supposed to absorb shocks but become dry and hardened, causing squeaks when compressed. Alternatively, the internal seals of the shock absorber might be damaged, and with oil leakage, it can't function smoothly, resulting in a thumping sound when compressed. Loose mounting bolts or rusted and deformed suspension springs could also be the culprits. Additionally, accumulated dust and sand at the joints can cause friction noises. These abnormal sounds are no small matter; neglecting them can lead to a loose suspension, affecting steering stability and braking performance, and causing faster tire wear. I recommend not tinkering with it yourself but instead taking it to a professional repair shop to inspect the components and replace them if necessary.

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What are the reasons for water leakage in the car's front passenger seat?

Water leakage in the car's front passenger seat can be caused by: Clogged sunroof drainage holes. During rainy days, if the sunroof drainage holes are blocked, rainwater cannot drain out and will seep into the car; Aging sunroof rubber seals. Plastic components harden and age over time, and once the sunroof rubber seals age, their sealing effectiveness decreases, leading to water leakage during rain; Clogged air conditioning drainage holes. Condensation water from the evaporator cannot drain out and will seep from the front passenger seat area; Poor door sealing. Incorrect installation or aging and deformation of door seals can reduce the car's sealing effectiveness, causing water to enter the car during rain; Clogged door drainage holes. Due to their low position, door drainage holes can easily get blocked by mud, preventing rainwater inside the door from draining and causing it to seep into the car. Methods to address front passenger seat water leakage: Use a dry towel or water scooping tool to remove accumulated water inside the car; Identify the leakage point and repair it accordingly. Effects of water leakage: Slight leakage around the sunroof can lead to mold growth; Door leakage can damage the door lock and affect the window lifting system; Trunk leakage can cause corrosion.

How to Use the Rear Seat Three-Person Seat Belt?

The usage of the rear seat three-person seat belt is as follows: The left and right seats in the rear are equipped with three-point seat belts, while the middle seat has a two-point seat belt. The method of fastening the seat belts for the left and right seats is the same as that for the driver and front passenger seats. The person sitting in the middle can only use the seat belt to secure their abdomen. When fastening the middle seat belt, simply pull it from one side and insert the buckle into the other side to secure the abdomen. Precautions for using seat belts are as follows: 1. First, regularly check the technical condition of the seat belt. If it is damaged, replace it immediately. 2. Second, correctly fasten the three-point lap seat belt. The seat belt should be worn as low as possible, around the hips, not the waist; the shoulder belt should not be placed under the arm but should be worn diagonally across the chest. Seat belts are for single use only; sharing between two people is strictly prohibited. Do not twist the seat belt when using it. 3. Third, when using the seat belt, ensure it does not press against hard or fragile objects, such as mobile phones, glasses, or pens in pockets. 4. Fourth, do not recline the seat back too much, as this may prevent the seat belt from retracting properly and affect its effectiveness.

Why does the engine RPM not increase when stepping on the accelerator?

Car stepping on the accelerator RPM does not increase due to: throttle problems, fuel supply system problems, ignition system problems, accelerator pedal position sensor problems. After this situation occurs, it should be tested at a professional repair shop or 4S shop. The ignition system of the car engine is mainly composed of spark plugs and ignition coils. The spark plug is a wearing part that needs to be replaced regularly. Long-term use of spark plugs will increase the electrode gap, which will affect the normal ignition of the spark plug. Long-term use of spark plugs will also produce carbon deposits on the electrodes, which will also affect the normal ignition of the spark plug.

How to Inspect Timing Belts and Timing Pulleys?

When inspecting timing pulleys, you can use calipers to measure the pulley diameter and check for wear. Below is relevant information about timing belts and pulleys: 1. The common issue with timing pulleys is wear. During inspection, use calipers to measure the pulley diameter and check for wear. If the pulley diameter exceeds the allowable limit, the timing pulley should be replaced. The manufacturer's recommended lifespan for timing belts is generally 32,000-96,000 km. If damage is found during inspection, the belt must be replaced. 2. Timing belts come in two types: single-sided teeth and double-sided teeth, referred to as single-sided belts and double-sided belts. Double-sided belts are further divided into symmetrical tooth type (DA) and staggered tooth type (DB). Timing belt teeth are categorized into trapezoidal tooth timing belts and arc-shaped tooth timing belts. Timing belt models are classified into seven types: lightest MXL, ultra-light XXL, extra-light XL, light L, heavy H, extra-heavy XH, and ultra-heavy XXH. 3. Timing pulleys are typically made from materials such as steel, aluminum alloy, cast iron, and brass. Their inner holes can be round, D-shaped, or tapered. Timing belt transmission consists of a closed-loop rubber belt with evenly spaced teeth on its inner surface and corresponding pulleys.

Why Can't the Car Windshield Washer Spray in Winter?

If the windshield washer fluid doesn't spray, it may be due to low fluid level. Here are the reasons and solutions for windshield washer fluid not spraying in winter: 1. If the washer fluid is full but still doesn't spray, the nozzle might be clogged with dust. Try using a fine needle to unclog the nozzle. Considering it's winter, the reservoir or pipes might also be frozen. After warming up the car sufficiently, try parking it in the sun. If it starts spraying, it means you need to switch to a higher-grade antifreeze washer fluid. If there's no sound from the motor when trying to spray, and the wipers don't work either, check if the fuse is blown or the motor is damaged. If none of these are the issue and the washer fluid still won't spray, consider the possibility of the pipes being clogged with debris. 2. If the washer nozzle is clogged, you can use a needle or thin wire to unclog it. Locate the nozzle position and gently pry it up with a screwdriver—the nozzle is a snap-fit structure and doesn't require much force. Once the nozzle is lifted, you'll see a small hose connected underneath. Remove the nozzle from the hose directly, but be careful not to let the hose fall into the car, as you would then need to remove the entire panel to retrieve it.

What are the techniques for shifting gears in a manual transmission car?

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