Why is there a delayed response when stepping on the accelerator?
2 Answers
Why is there a delayed response when stepping on the accelerator? It could be due to a throttle malfunction or a blockage in the intake pipe. A throttle malfunction can affect the opening and closing degree, while carbon buildup in the intake pipe directly impacts the air intake volume. Reduced air intake affects the combustion efficiency of gasoline, leading to acceleration delay. The accelerator, also known as the throttle or air valve, is a control device that regulates the engine's power (thrust). In piston-type aircraft engines, the throttle controls the carburetor's throttle opening to regulate the cylinder's filling volume, thereby determining the engine's output power. In gas turbine engines, the throttle controls the metered fuel flow of the fuel regulator, thus determining the thrust generated by the engine.
Delayed power response after stepping on the accelerator is something I also encounter during daily driving. A common cause is excessive carbon buildup in the throttle body, which controls air intake into the engine. Carbon deposits can make it less responsive and slower to open/close. You can try using throttle cleaner for DIY treatment, but results may vary—it's best to have it professionally cleaned at a repair shop, costing anywhere from tens to hundreds of RMB. Carbon buildup may also clog fuel injectors, increasing fuel consumption and emissions. Another factor could be an aging fuel pump with insufficient pressure, causing delayed fuel delivery when accelerating. Regular maintenance is crucial—inspect the throttle body and fuel system every six months to prevent minor issues from escalating. Safety-wise, delayed response is hazardous during overtaking, so address it promptly.
