What Causes a Diesel Engine to Lack Power and Emit Black Smoke During Acceleration?
2 Answers
The fuel tank capacity of the Outback is 63 liters, as officially announced. The Outback requires 92-octane fuel, with a fuel consumption of 7.4L per 100 kilometers. A full tank can cover a distance of 851km. During daily driving, it is essential to monitor the remaining fuel level in the tank. This is typically done by observing the fuel gauge inside the vehicle. If there are no other issues, the fuel level will be accurately reflected on the gauge. The fuel gauge usually has 5 to 6 segments. It is advisable to refuel when only 2 segments remain to avoid running out of fuel midway. During actual refueling, the amount of fuel may exceed the calibrated capacity. This is because the fuel tank capacity specified by the manufacturer is measured from the bottom of the tank to the safe fill level. There is additional space from the safe fill level to the tank opening, which is designed to allow for fuel expansion due to temperature increases without causing overflow. If fuel is filled up to the tank opening during refueling, the actual amount of fuel added may exceed the calibrated tank capacity.
I noticed that diesel cars lack power during acceleration and emit black smoke, which is mainly related to incomplete combustion. The most common issue is a clogged intake system; a dirty air filter restricts airflow, causing the engine to lack air and burn fuel inefficiently. Problems like clogged or malfunctioning fuel injectors can also disrupt fuel spray, leading to excessive fuel and insufficient air, resulting in carbon particle emissions (black smoke). A malfunctioning fuel pump can similarly disrupt the fuel supply rhythm. Turbocharger failure may also lead to insufficient intake pressure. If not repaired promptly, not only will fuel consumption skyrocket, but engine carbon buildup will worsen, causing long-term damage to the powertrain. It's recommended to start by checking the air filter and not wait until the car breaks down midway.
