What are the causes of unstable idle speed?

What Causes the Sizzling Sound When Starting a Cold Engine?

The sizzling sound when starting a cold engine is caused by the valves. After the car has been parked for an extended period, the engine oil flows back to the oil pan, leaving the top of the engine, specifically the valve chamber, with insufficient oil. Since the valves lack the sealing and lubrication provided by the oil, this can result in the sizzling noise. Additionally, sometimes the car's belt may be loose, leading to a similar sound. In such cases, it is advisable to visit a repair shop to have the belt checked and tightened appropriately to see if the issue resolves. Regular maintenance of the belt is essential, ensuring it is neither too loose nor too tight. You can manually check the belt's tension by pulling on it; if it feels excessively loose or tight, it's best to have it inspected by a professional. Furthermore, if the sizzling sound occurs when applying the brakes while driving, it indicates that the brake pads have worn down to their limit and are now grinding against the brake discs. In this situation, immediate inspection and repair at a service center are necessary to identify the exact cause of the noise and avoid further driving under such conditions.

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How to Remove the Middle Row Seats in the Elysion?

The middle row seats in the Elysion cannot be removed; only the seats in the last row can be taken out. The Elysion is a mid-to-high-end MPV launched by Dongfeng Honda. It is equipped with a 2.0L naturally aspirated engine paired with a 5-speed automatic transmission and offers both two-wheel-drive and four-wheel-drive versions. The maximum horsepower is 146ps, and the maximum torque is 175nm. In terms of body dimensions, the Elysion measures 4935mm in length, 1845mm in width, and 1805mm in height, with a wheelbase of 2900mm. The front suspension is a MacPherson independent suspension, while the rear suspension is a torsion beam non-independent suspension.

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Why does the clutch shake when pressed?

The reasons for clutch shaking when pressed are: 1. Uneven pressure distribution in the car's clutch; 2. Excessive elasticity of the clutch pressure spring; 3. Insufficient lubrication causing stiffness in components like the release sleeve and release fork shaft; 4. Oil contamination or breakage of the driven disk lining; 5. Bending of the main or driven disk, or inconsistent height of the release levers. Solutions for clutch shaking: 1. Readjust the pressure distribution of the car's clutch; 2. Replace the clutch pressure spring with one of suitable size; 3. Add lubricant between components like the release sleeve and release fork shaft; 4. Replace the damaged driven disk lining.

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Is China 4 OBD equivalent to China 5 emission standards?

China 4 OBD's exhaust emissions meet the China 5 emission standards, provided that the vehicle must be equipped with an OBD engine fault self-checking device to achieve the China 5 emission standard. Automobile emission standards refer to the regulations on the content of harmful gases such as CO (carbon monoxide), HC plus NOx (hydrocarbons and nitrogen oxides), and PM (particulates, carbon smoke) emitted from vehicle exhaust. China 5 refers to the National Fifth Stage Motor Vehicle Pollutant Emission Standard, abbreviated as the "China 5 Standard". The emission control level of the China 5 Standard is equivalent to the European Union's currently implemented Euro 5 emission standard.

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How long do I have to wait to reschedule after failing the second subject of the driver's license test once?

You can reschedule the second subject of the driver's license test ten days after failing it once. The driver's license test is conducted to obtain a motor vehicle driver's license. The content and passing standards of the test subjects are uniformly set nationwide. The test is divided into three subjects and four tests: theoretical knowledge, field driving skills, road driving skills, and safe and civilized driving knowledge. The basic process of the driver's license test includes filling out forms, physical examination, acceptance, payment, testing, and certificate issuance. The content and passing standards of the test subjects are uniformly set nationwide. The test sequence is conducted in the order of Subject 1, Subject 2, Subject 3, and Subject 4. You can only take the next subject test after passing the previous one.

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How to Clean a Car Engine Compartment?

Car engine compartment cleaning methods are as follows: First, try removing dirt from the engine compartment with a damp cloth. If this can clean the engine compartment thoroughly, then avoid using water for cleaning. If a damp cloth cannot remove the dirt, try using ordinary detergent to wipe it. If the above two methods still fail to remove the dirt, then opt for water cleaning. Points to note include: 1. For dirt like mud or dust that can be removed with water, always cover components before sprinkling water; 2. Engine-specific cleaners should not be used on painted surfaces; 3. Aluminum-plated parts such as radiator grilles and exhaust pipes require special cleaners for cleaning.

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What are the causes of unstable idle speed?

What Causes the Sizzling Sound When Starting a Cold Engine?

How to Remove the Middle Row Seats in the Elysion?

Why does the clutch shake when pressed?

Is China 4 OBD equivalent to China 5 emission standards?

How long do I have to wait to reschedule after failing the second subject of the driver's license test once?

How to Clean a Car Engine Compartment?

How to Add Refrigerant?

What Causes High Idle Speed During Cold Start?

Are Headlights the Same as Low Beams?

What Causes Engine Noise During Cold Start?