What can cause poor engine performance related to the fuel system?

Poor engine performance related to the fuel system is often attributed to issues such as clogs or inefficiencies in fuel delivery components. A dirty fuel injector is a prime example of this problem. Fuel injectors are responsible for spraying fuel into the combustion chamber in a precise manner. When they become dirty, their ability to atomize the fuel properly is compromised, which can lead to uneven fuel distribution, reduced engine power, misfires, or even stalling.

In contrast, using high-quality fuel generally improves engine performance, as it often contains additives that keep the fuel system clean. Proper tire pressure relates more to vehicle handling and efficiency rather than directly affecting engine performance. An optimal air filter can positively impact engine performance by ensuring that the engine receives clean air, but it does not involve the fuel delivery system directly. Therefore, a dirty fuel injector stands out as the factor most directly linked to issues within the fuel system that could lead to poor engine performance.