How long will a car battery last if the car is not driven?

How to Determine Whether the Air-Fuel Mixture is Too Rich or Too Lean?

Methods for determining whether the air-fuel mixture is too rich or too lean are as follows: 1. Symptoms of a too-lean mixture: Carburetor backfire, difficulty starting, engine overheating, detonation in the cylinder, reduced power, improvement of the above symptoms when the choke is closed, knocking sound during acceleration, unstable idle speed prone to stalling, and very white spark plugs. 2. Symptoms of a too-rich mixture: Exhaust pipe popping with black smoke and possibly oil droplets, engine overheating, insufficient power, unstable operation, increased fuel consumption, muffled engine sound, weak acceleration, unstable idle speed, and severely blackened and carbon-fouled spark plugs. 3. Rich mixture: When the excess air coefficient is between 0.85 and 0.95, the flame propagation speed is the highest, resulting in the fastest combustion rate. This allows the cylinder pressure and temperature to reach their maximum values in a short time, with minimal heat loss and maximum work output. Since the fuel supply at this point is slightly more than required for complete combustion, with a fixed air volume, the utilization of oxygen is enhanced, increasing the number of combustion product molecules and raising the gas pressure. Consequently, the engine delivers its maximum power. Such a mixture is referred to as the maximum power mixture.

11

5

Share

How to Adjust Steering When the Right Side is Too Wide During Reverse Parking in Driving Test (Subject 2)?

There are many things to pay attention to during the right reverse parking in Subject 2. Here are detailed instructions: 1. Steering too early: You should turn the steering wheel back half a turn or a full turn (the exact amount depends on the situation, it could also be 3/4 turn). Wait until the right rear wheel enters the parking space beyond the upper right corner (don't adjust the steering immediately when the wheel just reaches the corner), then continue to turn the steering wheel fully to the right. When the car body is almost but not completely straight, return the steering wheel to the center position. 2. Steering too late: If you notice in the rearview mirror that the tire is too far from the upper right corner of the parking space, immediately check the left rearview mirror. At this point, do not adjust the steering wheel. Let the car tilt until the left rear wheel enters the parking space beyond the upper left corner, then return the steering wheel to the center position and continue to turn left. When you see in the rearview mirror that the right side has safely entered, immediately check the left rearview mirror again. When the car body is almost but not completely straight, return the steering wheel to the center position to complete the parking.

6

2

Share

How Many Cylinders Does the Buick Excelle Engine Have?

The Buick Excelle is equipped with a four-cylinder engine. The 1.0-liter engine has the model code LJ1, while the 1.3-liter engine is coded L16. The 1.0-liter engine delivers 125 horsepower and a maximum torque of 170 Nm, with the maximum power achieved at 5,600 rpm and the maximum torque available between 2,000 and 3,600 rpm. The 1.3-liter turbocharged engine produces 163 horsepower and a maximum torque of 230 Nm, with the maximum power achieved at 5,500 rpm and the maximum torque available between 1,800 and 4,400 rpm. The Buick Excelle engine is part of General Motors' new-generation Ecotec dual-injection turbocharged engine series. Manufactured at the Shanghai General Motors Yantai Dongyue Base, it incorporates German technology and is classified as a domestically produced engine. For daily maintenance of the Buick Excelle engine, the following methods can be employed: Use lubricating oil of the appropriate quality grade. For gasoline engines, select SD to SF grade gasoline engine oil based on the additional equipment in the intake and exhaust systems and usage conditions. For diesel engines, choose CB to CD grade diesel engine oil according to mechanical load, ensuring the selected standard meets or exceeds the manufacturer's requirements. Regularly replace the engine oil and oil filter. The quality of any lubricating oil will degrade over time. After a certain mileage, its performance deteriorates, potentially causing various engine issues. To prevent malfunctions, change the oil periodically based on usage conditions and maintain an appropriate oil level. As oil passes through the fine pores of the filter, solid particles and viscous substances accumulate in the filter. If the filter becomes clogged and oil cannot pass through, it may rupture the filter or open the safety valve, allowing oil to bypass the filter and carry contaminants back to the lubrication points, accelerating engine wear and increasing internal pollution. Periodically clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal particles from component wear to form sludge. In small amounts, sludge remains suspended in the oil, but in larger quantities, it precipitates, clogging filters and oil passages, making engine lubrication difficult and leading to wear. Regularly use a radiator cleaner to flush the radiator. Removing rust and scale deposits not only ensures proper engine operation but also extends the overall lifespan of both the radiator and the engine.

3

0

Share

What Causes the Engine Warning Light to Illuminate in the Equinox?

The engine warning light may illuminate due to the following 7 main reasons: Sensor malfunction: The sensors referred to here include coolant temperature, crankshaft position, air flow, intake air temperature, oxygen sensors, etc. When these sensors are damaged, have poor contact, or experience signal interruption, the vehicle's ECU cannot accurately obtain engine data, which may trigger the engine warning light. Fuel/oil quality issues: Failure to use fuel and engine oil as specified by the manufacturer may cause engine wear, leading to the warning light activation. Poor fuel mixture combustion: Incomplete combustion can cause engine carbon buildup or knocking. When detected by oxygen sensors and reported to the ECU, the warning light will illuminate as an alert. Spark plug failure, ignition coil issues, fuel pump malfunction, or fuel line blockages can all contribute to poor combustion. Turbocharging problems: Issues with the intake boost piping or turbocharger may also trigger the engine warning light. The most common is turbocharger damage, often accompanied by oil leaks, excessive oil consumption, reduced power, metallic noises, or blue/black exhaust smoke. Intake problems: Air intake issues may cause engine pipe blockages, potentially triggering the warning light. A dirty air filter that hasn't been cleaned regularly can lead to intake problems. Exhaust system issues: Exhaust faults may also activate the engine light. Common causes include rear oxygen sensor failure, catalytic converter problems, or exhaust camshaft and bearing issues. Using leaded gasoline, certain lubricant additives, physical damage to the catalytic converter, or fuel system malfunctions can all contribute to catalytic converter failure. Anti-theft system malfunction: If the vehicle's electronic anti-theft system fails or the anti-theft controller doesn't match the engine ECU, the system may prevent normal engine operation while illuminating the warning light. When the engine warning light illuminates, follow these steps: First, check if the engine is operating normally. If there's noticeable shaking, smoke emission, or other abnormalities, avoid restarting the engine. Particularly important - never restart if the red warning light is on. If the engine can start, turn off the ignition for 5-10 minutes. Then, without pressing the brake pedal, press the start button once or turn the key halfway to the ON position (without depressing the clutch). The vehicle will initiate a self-check function after powering on. Observe whether the warning light turns off after 5-10 seconds. If the light remains on, visit a service center promptly. Technicians can use diagnostic tools to read trouble codes, identify specific issues, and perform targeted repairs.

14

3

Share

What brand of engine is used in the Changan Eado DT?

The engine of the Changan Eado DT is independently developed by Changan Automobile and produced in Chongqing, so it belongs to a domestic engine. The engine model of the Changan Eado DT is JL478QEE, with a maximum power of 92kW, a maximum torque of 160Nm, and a maximum horsepower of 125. For the daily maintenance of the Changan Eado DT's engine, the following methods can be used: Use lubricating oil of appropriate quality grade. For gasoline engines, SD--SF grade gasoline engine oil should be selected based on the additional devices of the intake and exhaust systems and usage conditions; for diesel engines, CB--CD grade diesel engine oil should be selected according to mechanical load, with the selection standard not lower than the requirements specified by the manufacturer. Regularly change the engine oil and filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, the performance deteriorates, which can cause various problems for the engine. To avoid failures, the oil should be changed regularly according to usage conditions, and the oil level should be kept moderate. When the oil passes through the fine pores of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter is blocked and the oil cannot pass through the filter element, the filter element may burst or the safety valve may open, allowing the oil to pass through the bypass valve and bring contaminants back to the lubrication area, accelerating engine wear and increasing internal pollution. Regularly clean the crankcase. During engine operation, high-pressure unburned gas, acid, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and the cylinder wall, mixing with metal powder generated by part wear to form sludge. A small amount of sludge remains suspended in the oil, while a large amount precipitates, blocking the filter and oil holes, making engine lubrication difficult and causing wear. Regularly use a radiator cleaner to clean the radiator. Removing rust and scale not only ensures the normal operation of the engine but also extends the overall lifespan of the radiator and the engine.

11

2

Share

Where are Mitsubishi engines produced in China?

Mitsubishi engines are produced in Shenyang, China, by Shenyang Aerospace Mitsubishi Engine Manufacturing Co., Ltd., and are considered domestically manufactured engines. Models equipped with Mitsubishi engines include: BYD, Great Wall Haval, Landwind, Venucia Star, Leopaard, etc. Among them, the Venucia Star uses the A415TD engine model, which delivers a maximum horsepower of 190 hp, a maximum power output of 140 KW at 5500 rpm, and a torque of 260 Nm between 1500 to 4500 rpm. For daily maintenance of Mitsubishi engines, the following methods can be used: Use lubricating oil of appropriate quality grade. For gasoline engines, select SD--SF grade gasoline engine oil based on the additional equipment of the intake and exhaust systems and usage conditions; for diesel engines, choose CB--CD grade diesel engine oil according to mechanical load, with the selection standard not lower than the manufacturer's requirements. Regularly change the oil and oil filter. The quality of any grade of lubricating oil will degrade during use. After a certain mileage, performance deteriorates, leading to various engine issues. To avoid malfunctions, change the oil regularly based on usage conditions and maintain an appropriate oil level. When oil passes through the fine pores of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter becomes clogged and oil cannot pass through, the filter may burst or the safety valve may open, allowing oil to bypass through the bypass valve and carry contaminants back to the lubrication areas, accelerating engine wear and increasing internal pollution. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal particles from component wear to form sludge. Small amounts remain suspended in the oil, while larger amounts precipitate, clogging filters and oil passages, making engine lubrication difficult and causing wear. Regularly use radiator cleaner to flush the radiator. Removing rust and scale deposits not only ensures the engine operates properly but also extends the overall lifespan of the radiator and engine.

16

2

Share

How long will a car battery last if the car is not driven?

How to Determine Whether the Air-Fuel Mixture is Too Rich or Too Lean?

How to Adjust Steering When the Right Side is Too Wide During Reverse Parking in Driving Test (Subject 2)?

How Many Cylinders Does the Buick Excelle Engine Have?

What Causes the Engine Warning Light to Illuminate in the Equinox?

What brand of engine is used in the Changan Eado DT?

Where are Mitsubishi engines produced in China?

Does the Mustang have a convertible model?

Are the Lingdong and Elantra the same car?

Why does the sensor of Mercedes-Benz gla200 always fail?

What does airbac mean?