What Causes the Abnormal Noise When Going Over Speed Bumps?

Why is there abnormal noise when starting the car?

Reasons for abnormal noise when the car starts: 1. Clutch noise. 2. Transmission shaft support bearing noise. 3. Drive axle abnormal noise. 4. Differential abnormal noise. 5. Tire noise. 6. Loose parts of the vehicle causing resonance. At low speeds, the vibration frequency is low and may be close to or the same as the natural frequency of certain components, leading to resonance. The relationship between abnormal noise and temperature: 1. Noise occurs at low temperatures and reduces or disappears as the temperature rises. Possible causes include excessive clearance between the piston and cylinder wall; incorrect depth and width of the main bearing oil groove; low oil pressure leading to poor lubrication. 2. Noise occurs when the temperature rises and reduces or disappears when the temperature drops. Possible causes include pre-ignition due to overheating; incorrect orientation of the major and minor axes of the piston skirt oval; insufficient piston ovality or too small clearance between the piston and cylinder wall; piston deformation; insufficient clearance in piston rings.

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Can I Get a Refund After Enrolling in a Driving School?

You can get a refund after enrolling in a driving school. Below is the relevant information: If a student enrolls in a driving school but no longer wishes to continue, they can request a refund, but the situation varies. If the student terminates their enrollment due to personal reasons, such as illness or job relocation, and has not started any training, the driving school will generally issue a full refund. However, if the student has already taken the written test (Subject 1) or the practical test (Subject 2), the refund amount will depend on the driving school's refund policy. Since there is no unified refund standard, it is difficult to determine the exact amount. Generally, the enrollment fee includes the driving school's training fee and the examination fee charged by the vehicle management office. The refund standards based on the student's progress are as follows: 1. If the student has enrolled but has not undergone a medical examination or failed the medical exam, a deduction of 100 RMB will apply. 2. If the student has passed the medical exam but has not taken the theoretical test, a deduction of 320 RMB will apply. 3. If the student has taken the theoretical test but has not started practical training, a deduction of 580 RMB will apply. 4. If the student has started field training but has not taken the test, a deduction of 580 RMB plus the actual training hours multiplied by the hourly rate (100 RMB/hour for small vehicles, 150 RMB/hour for large vehicles) will apply. 5. If the student has taken the Subject 2 test, no refund will be issued. Students are reminded to keep the original invoice from the driving school enrollment. Losing it may cause difficulties during the refund process. If a dispute arises with the driving school over the refund and no agreement is reached, students can call the Transportation Management Bureau complaint hotline (12328) for mediation.

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How to Use the Air Conditioning in Jetour X70?

The air conditioning is automatic. Press the AC button on the center console to turn it on, then adjust the fan speed and temperature as needed. The car air conditioning has the following four functions: 1. The air conditioner can control the temperature inside the cabin: It can both heat and cool the air to maintain a comfortable temperature. 2. The air conditioner can dehumidify the air: By removing moisture, it helps absorb sweat and creates a more comfortable environment. 3. The air conditioner can intake fresh air: It has a ventilation function to bring in outside air. 4. The air conditioner can filter the air: It removes dust and pollen from the air.

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What to Prepare for a Road Trip?

Things to prepare for a road trip: 1. Three certificates and one card: In addition to bringing enough cash, don't forget your driver's license, vehicle registration, ID card, and insurance card. For long-distance trips, these three certificates are indispensable. 2. Vehicle tools: Jack, tire wrench, flathead and Phillips screwdrivers, pliers, at least one fixed wrench (matched to your vehicle), an adjustable wrench, a 5-meter tow rope with a tensile strength of no less than 1500 kg, and a work light (a flashlight will also do). 3. Essential driving items: Maps and a GPS navigator are indispensable for road trips. 4. Auxiliary equipment: Prepare camping gear like tents, bring some of your favorite CDs to listen to music on the road to relieve travel boredom and fatigue. Have a camera and enough film ready, avoid buying film at scenic spots, and don't forget the chargers for your digital camera and phone. 5. Tires: During a road trip, you may encounter various challenging roads such as water paths, muddy roads, and mountain trails, which place high demands on tire quality. 6. Braking: If the road trip mainly involves mountain roads, it's best to prepare an extra set of brake pads to avoid accelerated wear from long downhill stretches, which could lead to brake failure.

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How to Deal with Foggy Interior Glass?

Solutions for foggy car windows: 1. First, use a clean cloth to wipe off the fog on the windows. 2. Adjust the car window button to leave a small gap, allowing air circulation between the inside and outside of the car to reduce temperature differences and prevent fogging. 3. Start the car engine in neutral or park and warm up the car. 4. Once the water temperature gauge rises, turn on the car's air conditioning and press the window defogging button to dry the moisture on the windows with warm air. 5. Purchase a car-specific anti-fog spray or anti-fog towel from an auto parts store. First, clean the window surface with a clean cloth or anti-fog towel, then spray the product on the clean window surface to form a protective film that prevents fogging. 6. First, wipe the window surface with a clean cloth, then mix dish soap and water in a 1:10 ratio, shake well, and use a clean cloth to apply the mixture to the glass.

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When Should the Antifreeze Be Replaced?

For the replacement of antifreeze, we can follow the suggestions below: 1. Regularly check the antifreeze level; if it is below the lower limit, replenish it promptly. 2. Before winter each year, measure the freezing point of the antifreeze to ensure it is 15°C to 20°C lower than the local minimum temperature. 3. Replace the antifreeze according to the replacement cycle specified in the vehicle manual, which is generally two years, though some may indicate 4-5 years or longer—follow the owner's manual. 4. Some antifreeze does not have a clearly specified replacement cycle; in such cases, we can determine whether replacement is needed by observing the antifreeze's condition, such as turbidity, sediment, or an excessively low freezing point. 5. Different vehicle models may use antifreeze of different colors, so mixing them is not allowed.

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What Causes the Abnormal Noise When Going Over Speed Bumps?

Why is there abnormal noise when starting the car?

Can I Get a Refund After Enrolling in a Driving School?

How to Use the Air Conditioning in Jetour X70?

What to Prepare for a Road Trip?

How to Deal with Foggy Interior Glass?

When Should the Antifreeze Be Replaced?

How Many Kilometers Should You Change Your Car Engine Oil?

What to Do When the EPC Light Comes On and the Car Won't Start?

How to Deal with Strong Odors Inside the Car?

What to Do When a Beginner Driver's Car Veers Off Course?