What is the reason for the roar of Land Rover Range Rover Sport Edition?

Due to starter failure, engine flywheel problem and oil pump failure. Engine maintenance has the following three points: 1. Clean air filter: The air filter is directly related to the air intake of the engine when the car is driving. If the air filter is blocked or there is too much dust, the air inlet of the engine will be blocked, and a large amount of dust will enter the cylinder, which will accelerate the carbon deposition in the cylinder, resulting in poor engine ignition, and the fuel consumption of vehicles with insufficient power will naturally increase; 2. Remove the throttle sludge: the sludge at the throttle is caused by the carbon deposit formed at the throttle by the exhaust gas discharged from fuel combustion and the sludge left at the throttle by impurities not filtered by the air cleaner. Excessive air intake will cause air resistance and increase fuel consumption; 3. Cleaning the nozzle carbon deposit: Because the combustion chamber is easy to produce carbon deposit, it will lead to the difficulty in starting the nozzle carbon deposit, and it will also lead to oil blockage, gasoline injection deformation, poor atomization, and fuel consumption will naturally increase.