30,000 kilometers, the spark plug has just been replaced, there is no carbon deposit in the cylinder, the throttle is clean, the nozzle is clean, the three-way catalytic emission 1.5 displacement, and

30,000 kilometers, the spark plug has just been replaced, there is no carbon deposit in the cylinder, the throttle is clean, the nozzle is clean, the three-way catalytic emission 1.5 displacement, and the fuel consumption 10 liter? 1. The original three-way catalytic converter that is not blocked can be seen very bright in the light, and there is no abnormal sound and powder drop in the shaking shell. If blockage is suspected, the part can be removed for inspection. Weak acceleration and poor exhaust are not necessarily the causes of the exhaust pipe. Because the driving distance is still relatively short, there will be no problem with the three-way catalyst unless it is flooded, flooded or refueled by mistake. 2, the car is weak, first check the cylinder pressure. The cylinder pressure of the cold car must be greater than 1 1 kg/cm2. Be careful not to measure when the engine is hot. The pressure is normal, mostly due to oil circuit failure. For example, the oil quality is poor or there is water in the oil, the car wash line is wet in rainy days, the ignition coil drops, and the ECU fails (change to the same model test).