What effect does a malfunctioning fuel pump have on a motorcycle's performance?

A malfunctioning fuel pump significantly impacts a motorcycle's performance by reducing the fuel supply to the engine. The fuel pump is responsible for delivering the correct amount of fuel from the tank to the engine for combustion. When the fuel pump is not operating correctly, it can lead to insufficient fuel reaching the engine, which results in a lean fuel mixture. This lean mixture can cause poor engine performance, reducing power and acceleration as the engine struggles to produce the necessary horsepower. Additionally, it may lead to stalling or difficulty starting the engine, highlighting the critical role the fuel pump plays in maintaining optimal engine operation.