What happens when gasoline quality is poor?

What Causes a Car to Shake When Going Uphill?

Here are the reasons why a car shakes when going uphill: 1. Damaged spark plugs. Wear on the spark plug electrode gap leads to insufficient spark ignition, causing incomplete combustion of the air-fuel mixture and resulting in shaking during uphill acceleration; cracks in the ceramic part of the spark plug can prevent it from firing, leading to misfires in some cylinders and subsequent shaking. 2. Poor-quality gasoline can result in poor atomization by the fuel injectors, causing incomplete combustion of the air-fuel mixture in the cylinders, leading to shaking when going uphill. It is recommended to use higher-grade gasoline and clean the fuel system. 3. Uneven tire tread, such as bulges or foreign objects. Loose wheel bearings can also cause the vehicle to shake when going uphill.

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How often should grease be applied to the drive shaft?

Grease should be applied to the drive shaft every 10,000 kilometers. The drive shaft is a high-speed, low-support rotating body. Before leaving the factory, the drive shaft undergoes dynamic balancing tests and adjustments on a balancing machine. Below are the relevant details about the drive shaft: 1. Regularly lubricate the universal joint cross bearing with grease, using No. 3 lithium-based grease in summer and No. 2 lithium-based grease in winter. 2. Frequently check the tightness of the drive shaft hanger: whether the support rubber is damaged, whether the connecting parts of the drive shaft are loose, and whether the drive shaft is deformed. 3. To ensure the dynamic balance of the drive shaft, pay attention to whether the balance welding tabs are detached. When installing a new drive shaft, pay attention to the assembly marks of the telescopic sleeve and ensure that the flange fork is on the same plane.

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How Long After Subject 3 Can You Take Subject 4?

There are three scenarios for the timing of the Subject 4 exam after passing Subject 3: taking it directly on the same afternoon; no appointment required within 9 days—you can take the Subject 4 exam at the test center within 9 days after passing Subject 3 by presenting your ID; or scheduling an appointment after 10 days, with success depending on the current number of examinees, student priority, and temporary arrangements at the test center. Subject 4, also known as the Subject 4 theory test or driver theory test, is part of the motor vehicle driver's license assessment. It includes requirements for safe and civilized driving operations, knowledge of safe driving under adverse weather and complex road conditions, emergency handling methods for situations like tire blowouts, and post-accident handling knowledge. Subject 4 Exam Notes: Exam Duration: The exam lasts 30 minutes. Making mistakes totaling 12 points (6 questions) will terminate the exam. Number of Questions: Depending on the type of license, 50 questions are randomly selected from the corresponding Subject 4 question bank. For car licenses, questions are drawn from a pool of 800, while for large vehicle licenses, they are drawn from 1,023. Each question is worth 2 points. Question Types: The exam includes single-choice questions (including true/false questions) and multiple-choice questions. The first 45 questions are single-choice, and the last 5 are multiple-choice. The exam also includes animation-based questions, image-based questions, scenario recognition questions, and text-based questions. Retake Notes: If you fail Subject 4, you only need to retake Subject 4. The driving school will schedule the retake, with no limit on the number of retakes. You can retake until you pass, and no retake fee is required. Subject 4 Exam Tips: Strengthen weak areas and identify the reasons for mistakes. For marked questions, don’t just memorize the correct answer. Refer to regulations, textbooks, or reference materials to understand the reasoning behind the mistakes. Categorize and summarize questions. Use the question bank analysis to group similar questions: many questions in the bank are similar and easily confused, so they should be analyzed together. For example, traffic signs for walking, hiking, pedestrian crossing, and pedestrian zone warnings are very similar and easily mixed up. Grouping them during study helps avoid errors. Use memorization techniques: Many questions in the bank involve numbers. Summarizing these numbers can make them easier to remember. The driving test consists of three main subjects: Subject 1, Subject 2, and Subject 3, with Subject 3 divided into two parts. Subject 4 is the colloquial name for the Subject 3 Safety and Civilized Driving Knowledge Test and is not a separate subject. Subject 1 refers to the traffic safety laws, regulations, and related knowledge test; Subject 2 refers to the field driving skills test; and Subject 3 refers to the road driving skills and safety and civilized driving knowledge test. The safety and civilized driving knowledge test is conducted after Subject 3.

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What does 98H on a tire mean?

98H represents the load index and speed symbol respectively. 98 is the load index, and H is the speed symbol. 98 indicates a maximum load capacity of 750kg, while H denotes a maximum speed limit of 210km/h. The load index uses a coded form to represent the maximum load a single tire can bear. For example: a tire with a load index of 98 has a maximum load capacity of 750kg. The speed symbol indicates the maximum speed the tire can withstand, represented by English letters. The later the letter appears in the alphabet, the higher the permissible speed limit. Here is additional information: 1. Common tire speed symbols include: S, T, H. If a tire has no speed symbol, unless otherwise specified, its maximum safe speed is typically 120KM/H. 2. A common tire model marking example: 225/50R17 98H, where the numbers represent: 225 indicates the tread width, 50 is the aspect ratio (the ratio of the tire sidewall height to the tread width).

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What to Do When Accidentally Shifting to Neutral (N) While Driving an Automatic Transmission?

When accidentally shifting to Neutral (N) while driving an automatic transmission, the correct procedure is to release the accelerator, gently apply the brakes, and then shift back to Drive (D). Releasing the accelerator minimizes engine power output, reducing the impact during gear engagement. Some vehicles have gear protection features that allow shifting without braking. Below are the details: 1. Some vehicles require pressing the brake pedal to shift from Neutral (N) to Drive (D). If the brake is not pressed, the gear lever remains locked and cannot be moved. Pressing the brake releases the gear lever. If the vehicle allows shifting from N to D without braking, simply push the lever into D. 2. After shifting to D, avoid immediately pressing the accelerator. Wait a few seconds because, while driving, the transmission needs time to determine the appropriate gear based on vehicle speed and engine RPM, which controls the shifting mechanism. Immediate acceleration after shifting to D may cause delayed response.

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What are the differences between C1 and C2?

The main difference lies in the types of vehicles they permit to drive. A C1 license holder can drive vehicles permitted by C2, but a C2 license holder cannot drive vehicles permitted by C1. Holders of a C1 license can drive vehicles permitted by C2, C3, and C4. Below are the specific differences in the types of vehicles permitted: 1. Vehicles permitted by C1 include: light ordinary trucks with a length not less than 5 meters, or small ordinary passenger vehicles with a length not less than 4 meters, or cars with a length not less than 4 meters. 2. Vehicles permitted by C2 include: light automatic transmission ordinary trucks with a length not less than 5 meters, or small automatic transmission ordinary passenger vehicles with a length not less than 4 meters, or automatic transmission cars with a length not less than 4 meters.

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What happens when gasoline quality is poor?

What Causes a Car to Shake When Going Uphill?

How often should grease be applied to the drive shaft?

How Long After Subject 3 Can You Take Subject 4?

What does 98H on a tire mean?

What to Do When Accidentally Shifting to Neutral (N) While Driving an Automatic Transmission?

What are the differences between C1 and C2?

What is the Difference Between Buying a Car at a 4S Store and a Dealer?

Does Lexus have domestically produced cars?

Is a Wheel Alignment Necessary After Replacing Shock Absorbers?

What Does Car Door Locking Mean?