When you use a car in an emergency, it is inevitable that you will be angry because of the "deception" of the oil gauge. Here is a brief talk about the working principle of the oil gauge. The main reason for the failure of oil gauge is the disaster caused by oil level sensor. Generally, the following situations may occur when the scale of the oil gauge is inaccurate:
Symptom 1: The scale of oil gauge is fast and slow
Specific realization: the oil gauge scale shows the speed of time.
Analysis: this phenomenon of oil gauge failure is relatively common. Under normal circumstances, the oil gauge of many models in the first half will drop slowly, but after passing the intermediate scale, it will drop faster. This is mainly related to the design of oil pump used to reflect the oil quantity. It cannot reflect the change of gasoline consumption evenly. After all, it is difficult to realize this absolute constant change, it is not easy to change by repairing and replacing parts.
Symptom 2: The oil gauge scale suddenly drops to zero
Specific performance: on the way, I clearly saw that there were still two grids, but after driving a certain distance, it dropped directly to zero.
Analysis: the indication of the oil gauge depends almost entirely on oil level sensor, so the oil gauge pointer is actually an intuitive expression of oil level sensor. If this problem occurs, it means that there is a problem with the oil level sensor of the vehicle. Generally, it is due to stains on oil level sensor, which need to be cleaned in time. Because gasoline contains a lot of impurities, and oil level sensor has been soaked in it, it will be polluted after a long time, which directly affects the accuracy of the instructions. If the vehicle has been in use for more than 5 years and the indication of the oil gauge is not accurate, it is likely that physical wear and tear will occur in oil level sensor and it cannot continue to work normally.
Symptom 3: The scale of the oil gauge rises
Specific performance: the pointer of the oil gauge has been staying at a certain position, and some even travel a certain distance, the scale display value unexpectedly increased.
Analysis: the main reason for this situation is that the connecting rod between oil level sensor and floater is stuck, making the floater unable to float up and down normally, thus causing the sensor not to change, therefore, the pointer of the oil gauge is fixed at a certain position.
How to make the oil gauge tell the truth?
◆ first of all, try to choose gasoline with better oil
Clean gasoline will reduce impurities in the oil pump, greatly reducing the probability of oil gauge failure.
◆ secondly, regularly cleaning oil roads and fuel tanks
The vehicle runs about 5000km every other, and uses oil circuit cleaner to clean the oil circuit of the vehicle once, and at the same time, the fuel tank is cleaned every two years. Due to long-term use, a thick layer of silt will appear at the bottom of the fuel tank, which will indirectly affect the accuracy of the oil gauge.
