What are the reasons for the weak acceleration of the Haval F7?

[Joanna]

The reasons for the weak acceleration of the Haval F7 may include a clogged air filter, a faulty air flow meter, or improper intake valve clearance (either too large or too small). A clogged or waterlogged air filter reduces air intake, leading to an overly rich air-fuel mixture, incomplete combustion in the engine, and poor acceleration. Cracks in the fuel pipe or loose connections causing air leaks can result in insufficient fuel pump pressure and poor fuel supply, leading to weak acceleration. Poor atomization or clogging of the fuel injector can affect cylinder performance, thereby impacting acceleration. Issues with the air flow meter can reduce air intake, causing the air-fuel mixture to become too rich or too lean, affecting acceleration performance. Damaged spark plugs also impact acceleration. High coolant temperature or a faulty temperature sensor similarly affects acceleration. Additionally, a clogged catalytic converter or faulty oxygen sensor can cause poor engine acceleration. Improper intake valve clearance (too large or too small) can lead to cylinder misfires, affecting acceleration. Wear and tear on engine components such as valves, cylinder liners, pistons, and rings can result in insufficient cylinder pressure. Worn timing belts causing incorrect ignition timing (either too early or too late) also impact acceleration performance.