Why is the fuel consumption high after car maintenance?
1, too much oil or wrong model: only the proper oil viscosity can better lubricate the automobile engine. The higher the viscosity of the engine oil, the greater the adhesion and the thicker the oil film, which will have a certain resistance to the operation of the engine, consume more power during the driving of the vehicle and increase the fuel accordingly.
2, the spark plug model is wrong or the installation is not tight: the spark plug is screwed according to the torque, but many maintenance masters basically rely on the touch, and then the maintenance personnel are unskilled, and often use too much force to break the ceramic part on the spark plug.
In addition to selecting the matching vehicle model, the spark plug should be tightened according to the standard torque specified by the manufacturer, otherwise air leakage will occur, and high temperature and high pressure gas will slowly leak out, resulting in engine weakness, unstable idle speed, easy flameout at high speed, increased fuel consumption, and even serious consequences such as engine failure, spark plug failure and engine damage.
3. Failure to re-match the throttle after cleaning: Failure to re-match the throttle will also become one of the reasons for high fuel consumption, because the throttle opening will become larger after cleaning. If the testing computer is not required to be reset again, the engine will use the opening parameters before cleaning to control air intake and fuel injection, resulting in unstable idle speed and increased fuel consumption.
It is generally recommended to clean the throttle once every 20,000-40,000 kilometers, and a computer must be equipped after cleaning.
4. Cleaning up carbon deposits leads to tee blockage: If carbon deposits are cleaned up, sometimes it will be normal to run, because the driving computer needs a certain mileage to adapt to the working conditions after cleaning up. However, cleaning up the three-way blockage after carbon deposition will also lead to an increase in fuel consumption.
5. Reset the average fuel consumption during maintenance: Reset the average fuel consumption during maintenance, so as to recalculate the fuel consumption. If you don't get on the highway right away, the fuel consumption recalculated in the early stage will be artificially high, and it will come down after running for hundreds of kilometers.
Extended data:
In addition, the engine is the heart of the car, and the quality of the heart is directly related to the life of the whole car. The maintenance method of the engine is as follows:
1, keep oil clean, water clean, gas clean and body clean; Add good oil from regular gas stations, use antifreeze from regular manufacturers, maintain and replace air filters on time, and clean them irregularly.
2, often check the fastening parts, every maintenance once or half a year, must do an engine test;
3. Regularly observe and check, eliminate faults in time when found, and do a good job in engine maintenance to keep the machine in good working condition.
4. Ensure sufficient oil, water and air; You need to change the oil in time for half a year or more than 5000 kilometers, and you don't need antifreeze. The antifreeze has a high boiling point, which is beneficial to engine heat dissipation and prevents boiling. Remember to check every two months to see if there is water shortage. Be sure to check the engine vents for stolen goods or blockages.
Phoenix Net-Why is the fuel consumption getting higher and higher after car maintenance?
Phoenix net-pay attention to the use of running-in period and the maintenance of automobile engine