20 10 Nissan is weak after hot running in Qi Jun, and the speed is not up (about 3000 rpm), and the speed is about 100.

Go to the 4S shop for a major maintenance. . . . . It is estimated that your car really needs maintenance! Just make an estimate of all the projects. . . . Prepare 2000-3000 yuan. Don't ask me what happened. . . . . There is nothing wrong with your car. You just want to enjoy it. . . . . If you have to ask me something, I'll make it simple. . . . . Air filter, mechanical filter, steam filter and spark plug are all aging. It's time to change them! Air intake, valve, throttle, engine oil room, combustion chamber and oil circuit should be washed! By the way, look at your brake oil, steering oil and antifreeze, and change them if necessary. Check whether the thermostat and radiator are blocked or dirty, and blow them together. I guess your car will look brand new! By the way, don't forget to check the computer. . . . .