What are the reasons for lack of power when stepping on the accelerator?

2 Answers
MacAlyssa
07/28/25 11:23pm
The reasons for lack of power when stepping on the accelerator are as follows: Fuel system malfunction: A fuel system malfunction means that fuel is not being delivered through the fuel line to the combustion chamber, causing the engine to not operate normally. Insufficient fuel supply: If the amount of gasoline entering the engine's combustion chamber does not meet the standard, the combustion chamber won't have enough fuel for ignition and explosion, resulting in gradually decreasing vehicle power. Clogged fuel injectors: If the needle valve or valve orifice of the fuel injector is clogged, it will affect the working performance of the precision components in the electronic injection system, leading to reduced power performance. This can damage the engine and cause severe carbon buildup in the cylinders.
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AryaAnn
08/12/25 3:46am
I once experienced a situation where pressing the accelerator didn't get any response when driving my own car. It was really frustrating, like the car was being lazy. The most common cause might be a problem with the fuel system, such as a broken fuel pump or clogged fuel line, preventing fuel from reaching the engine smoothly. Or it could be worn-out spark plugs, causing weak ignition and insufficient combustion, leading to a lack of power. Sometimes, a dirty air filter blocking the intake can also make the engine 'struggle to breathe.' I once fixed the issue by cleaning the throttle body. Additionally, for automatic transmission cars, transmission faults like clutch slippage or insufficient oil pressure can cause this. A faulty electronic throttle sensor is another common issue, where the signal doesn't reach the computer. In short, don't panic if this happens—check simple things first, like whether there's fuel in the tank or if a fuse is blown. Regular maintenance and periodic checks of these components can prevent such issues at critical moments. If all else fails, consult a professional mechanic promptly—safety first, and don't let the problem escalate.
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