The engine is stuffy, feel that the oil is not accelerated, may be because the engine carbon deposition is serious, engine carbon deposition is a problem that will occur in every car, if the carbon deposition is serious, the car will have various problems, go to the 4s shop or repair shop to ask professionals to clean up the carbon deposit on the engine.
If there is a problem with the fuel system, the oil pressure will be very low, or the fuel nozzle will be very dirty, resulting in a small amount of fuel injection will appear the phenomenon of vehicle acceleration weakness, cleaning impurities on the injector can solve the problem, the ignition system has problems, spark plug If the electrode gap becomes larger, carbon deposition is serious, it will make the ignition energy drop, resulting in incomplete combustion.
Fuel consumption increases, power decreases, acceleration is weak, spark plugs are fragile products, to be replaced regularly, exhaust gas turbocharger or three-way catalytic converter failure, but also make the vehicle unable to accelerate when stepping on the accelerator, you need to use the diagnostic instrument of the 4s shop or repair shop to read the fault code, the owner of the car in the time of adding fuel, try not to be greedy and cheap, go to those small gas stations to refuel.
Substandard fuel is a great loss to the vehicle and can easily cause serious carbon deposition in the engine. It is best to go to a regular large gas station to refuel, although the price is a bit expensive, but it can protect the vehicle well, if you do not clean up the sludge and other impurities in the engine in time, it will cause the car's oil system to be blocked, and the fuel cannot be effectively transported, resulting in a decline in the power of the car.