What Causes Diesel Engine Power Loss and Black Smoke During Acceleration?

1 Answers
KateAnn
07/25/25 5:51am
This is mostly caused by incomplete combustion due to uneven or excessive fuel supply to each cylinder, insufficient air intake, poor atomization, or premature injection timing. Under high-temperature and oxygen-deficient conditions in the combustion chamber, unburned diesel decomposes and polymerizes to form carbon smoke, which is not pure carbon but rather tiny polymer particles. These solid carbon particles react much slower than vaporized fuel, failing to burn completely and being expelled as black smoke. Therefore, regular vehicle maintenance is essential. Below is an introduction to car maintenance: 1. Introduction to Car Maintenance: Car maintenance refers to the preventive work of regularly inspecting, cleaning, replenishing, lubricating, adjusting, or replacing certain parts of a vehicle, also known as vehicle servicing. 2. Scope of Car Maintenance: Modern car maintenance mainly includes the engine system, transmission system, air conditioning system, cooling system, fuel system, power steering system, and other related components. 3. Purpose of Car Maintenance: The goal of car maintenance is to keep the vehicle clean, maintain normal technical conditions, eliminate potential hazards, prevent malfunctions, slow down deterioration, and extend the service life.
Was this review help?
5
4
Share
More Forum Discussions

How to Use the Rearview Mirror Heating Function in the 2020 Buick Regal?

To activate the rearview mirror heating function in the 2020 Buick Regal, simply press the rear window defogger button. The rearview mirror heating indicator is represented by three upward-curving arrows inside a rectangle. This feature heats the mirror surface to remove fog and frost, ensuring clear visibility and enhancing driving safety. The 2020 Buick Regal is a mid-size sedan with dimensions of 4904mm in length, 1863mm in width, and 1461mm in height, featuring a wheelbase of 2829mm, a fuel tank capacity of 55 liters, and a trunk capacity of 441 liters. It is equipped with a MacPherson strut front suspension and a multi-link rear suspension. The vehicle is powered by a 1.5T turbocharged engine delivering a maximum horsepower of 169PS, a peak power of 124kW, and a maximum torque of 250Nm, paired with a 9-speed automatic transmission.
12
1
Share

How to recline the seats in the Koleos?

To recline the seats in the Koleos, adjust the backrest angle by pulling it forward or backward. Pushing forward tilts it forward, while pulling backward tilts it backward. To lower the headrest, press the adjustment button located next to the two support rods of the headrest or on the side of the headrest, then pull the headrest up or down. To adjust the seat height: 1. Locate the height adjustment lever on the driver's seat. 2. Lift the lever to adjust the seat height. To clean the seats: 1. Spray an appropriate amount of leather cleaner onto the leather seats, covering the surface. 2. Wait for 3 to 5 minutes to allow the cleaner to dissolve stains thoroughly. 3. Wipe off the stains and cleaner with a soft, dry cloth. To maintain the car seats: 1. Remove protective plastic bags promptly. 2. Install a suitable seat cover or cushion. 3. Wipe the seats regularly. 4. Dust the seats frequently. 5. Keep seats away from heat sources. 6. Avoid exposing seats to direct sunlight.
15
4
Share

What brand of transmission oil does the Corolla use?

Corolla uses Toyota Genuine ATF WS transmission oil. Symptoms of not changing the transmission oil include: 1. Decreased power - the vehicle responds sluggishly during acceleration with noticeable engine noise but no corresponding speed increase; 2. Difficult starts - at low gears, the engine revs up when accelerating but the vehicle covers less distance; 3. Transmission damage - overheating may occur, damaging bearings and gears; 4. Gearshift issues - jerky shifting, rough transitions, and unusual noises from the transmission. The transmission consists of gear transmission mechanisms and control mechanisms, whose function is to alter the speed and torque from the engine, either fixing or changing the gear ratio between the output and input shafts.
14
3
Share

What are the icons for air recirculation and fresh air mode respectively?

The icons for air recirculation and fresh air mode are: 1. The air recirculation icon features a car symbol with an arrow circulating inside the vehicle; 2. The fresh air mode icon shows a car symbol with an arrow pointing from outside to inside. The functions of car air conditioning include: 1. Cooling, heating, ventilating, and purifying the air inside the vehicle; 2. Providing a comfortable environment for passengers, reducing driver fatigue, and enhancing driving safety. Maintenance methods for car air conditioning: 1. Clean the air vents promptly; 2. Maintain the air conditioning condenser in a timely manner; 3. Clean or replace the air filter regularly. Proper usage of air conditioning: 1. Turn off the air conditioning when driving at low speeds; 2. Avoid smoking when the air conditioning is on inside the car; 3. Turn off the engine before switching off the air conditioning; 4. Activate recirculation mode immediately upon entering the car in summer.
1
3
Share

How to Remove the Compressor on a Land Rover Range Rover Diesel Version?

The steps to remove the compressor on a Land Rover Range Rover diesel version are: 1. Disconnect the oil pipe and flange; 2. Remove the spring, oil cylinder, oil piston, and pull rod as a complete set. The function of the compressor is to regulate the start-stop state of the air compressor, allowing the air compressor to shut down and rest by adjusting the pressure in the air storage tank, which has a maintenance effect on the engine. The working principle of the compressor: it draws the refrigerant from the low-pressure area, compresses it, and sends it to the high-pressure area for cooling and condensation. The heat is dissipated into the air through the radiator, and the refrigerant changes from a gaseous state to a liquid state, with increased pressure. Taking the 2021 Land Rover Range Rover Sport as an example, it belongs to the mid-to-large SUV category, with body dimensions of: length 4879mm, width 2073mm, height 1803mm, a wheelbase of 2923mm, and a fuel tank capacity of 104.3l. The 2021 Land Rover Range Rover Sport features a front suspension with a double-wishbone independent suspension and a rear suspension with a multi-link independent suspension. It is equipped with a 3.0L mechanical turbocharged engine, delivering a maximum horsepower of 360PS, a maximum power of 265kW, and a maximum torque of 495Nm, paired with an 8-speed automatic transmission.
13
0
Share

How to Use the Vehicle's Internet of Vehicles (IoV)?

The method to use the vehicle's Internet of Vehicles (IoV) is as follows: 1. Open WeChat on your mobile phone; 2. Click on the 'Scan' option in the top-right menu of WeChat; 3. Scan the QR code displayed on the vehicle's infotainment screen; 4. Follow the account and follow the prompts to bind and connect your vehicle. The Internet of Vehicles (IoV) is a vast interactive network composed of vehicle location, speed, route, and other information. Through mobile internet, it enables the collection and sharing of vehicle information, facilitating communication between vehicles and roads, vehicles and owners, owners and owners, and owners and third-party service providers via information processing.
4
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.