What is a consequence of using low-quality fuel in agricultural engines?

Using low-quality fuel in agricultural engines can lead to increased engine deposits due to several factors inherent in low-quality fuels. Low-quality fuels often contain higher levels of impurities, such as sulfur and other contaminants, which can result in incomplete combustion. Incomplete combustion produces soot and carbon buildup within the engine. These deposits can accumulate on critical engine components, such as fuel injectors, valves, and combustion chambers, leading to reduced engine efficiency, potential engine knock, and ultimately higher maintenance costs.

In contrast, the other outcomes suggested by the other choices do not typically result from low-quality fuel. Improved combustion, higher performance, and lower emissions are associated with high-quality fuels that promote efficient burning and optimal engine function.