What is the fuel injection in the exhaust pipe of Excelle Buick?

Causes of smoke in automobile exhaust pipe 1. If it is black smoke, it means that the mixture is too thick and it is a sign of insufficient combustion. Several methods to solve the problem are: cleaning throttle, nozzle and air inlet; Matching the data of the driving computer; The gasoline is not very pure. Try adding gasoline with higher label. 2. If it is white smoke, it means that there is a small amount of water in the cylinder, which turns into white gas after burning. Cause and solution: It may be that the cylinder gasket between the engine cylinder head and cylinder block is punctured (it is easy to puncture at high temperature), so replace the cylinder gasket. 3. If it is blue smoke, it is the performance of burning engine oil. Cause of the problem and solution: It usually happens when the car is old or the mileage exceeds100000. Parts related to burning engine oil generally include: valve oil seal, valve guide, cylinder liner, piston ring, piston and so on. You can go to the repair shop to remove the engine, check the damaged parts and replace them. If my answer is helpful to you, please set it as the best answer.