When each of us buys a car, we carefully inspect car to see if there are quality issues with exterior and interior of car. We can test these superficial problems ourselves.
The appearance is easy to check, but how to check engine? This should baffle many friends who buy cars. The performance of a car depends entirely on its engine. In fact, when we buy a car, most important thing is to check engine. The engine is like our human heart. Once there is any problem with engine, our car cannot drive normally, but can you to judge quality of our engine?
Today we invited a car mechanic with 20 years of service experience. Let me tell you about engine selection skills, then follow us to have a look. The Master said: You only need to look at these 3 points to see if it is good or bad.
First of all, if you want to evaluate quality of a car, most intuitive way is to look at exhaust pipe at back of car. Many non-professionals do not see any difference when they see exhaust pipe of such a car, but for some insiders generally speaking, we can know condition of our car just by looking at exhaust pipe. There are water drops at end of exhaust pipe. Touch inner wall of exhaust pipe with your hands and no black dust on your hands.
We can judge if engine is good or bad. Usually we can pay attention to whether there are water drops on ground behind car. If there are drops of water, it means that our car's oil has completely burned out. , Water vapor of carbon dioxide will be produced, so there will be water in exhaust pipe.
In this regard, we can look at power and torque parameters of engine. Then we all know that higher power, faster engine can make car move, and power is especially great. The higher torque, it means that engine performance is very good, and thrust is also very large, so we can look at engine power when buying a car. The more torque and higher speed, it means that fuel consumption of engine is also very high. Engine with most power, When power is highest and torque is lower, lower speed, lower fuel consumption, so this power meter is very important.
At same time, size of engine vibration program is also an important indicator to measure level of performance. Many people do not know this skill. Generally, lower vibration performance, higher manufacturing accuracy. and process of assembling engine. Also, it will be more reliable, and life of engine will be longer, but on contrary, life of such an engine will be greatly reduced, and reliability will become very poor,
So when we buy a car, we can put a water bottle on engine to observe vibration of engine. There are two ways to determine if there is noise in engine. If sound of engine is uneven or there are noises, then assembly process of such an engine may not be strict enough and assembly technology is not in place.
Therefore, when we buy a car, we must pay attention to engine. From these three aspects, we can easily determine how car starts.