Gac gonow Xinglang engine cannot be shaken. What happened?

Hello! ? 1, the fuel system is blocked, the pressure is insufficient, the fuel quality is poor, and the fuel nozzle is blocked. ? 2. The timing is wrong, and the variable intake and exhaust system doesn't work? Insufficient cylinder pressure. ? 3. The air intake is not smooth, and the value of air flowmeter or air intake pressure sensor is inaccurate. ? 4. Poor exhaust and three-way catalytic blockage. ? 5, spark plug or ignition coil, ignition energy is insufficient. I hope I can help you. The owner wishes you a pleasant journey. Thanks for your support. If you have any questions, please ask. If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.