What are the reasons for the throttle not increasing in an EFI car?

[SaraFitz]

Here are the specific reasons why the throttle does not increase in an EFI car: Fuel line blockage: Fuel line blockage leads to poor fuel supply, causing carbon deposits in areas such as the valves, idle motor, intake manifold, combustion chamber, and spark plugs. Rail pressure too low: Injector pressure relief rail pressure is too low or the common rail pressure limiting valve pressure relief rail pressure is too low, resulting in insufficient fuel supply. Incorrect air-fuel ratio: Incorrect air-fuel ratio: When the air-fuel ratio is incorrect, the car may experience unstable idling and a feeling of running out of fuel. This situation is easy to resolve. Simply adjust the idle screw until the idle stabilizes. Carburetor blockage: Carburetor blockage: If the idle measurement hole is blocked, there will be no idle; if the main metering hole is blocked, it indicates that high-speed acceleration is not smooth.