Why is it important to filter fuel before it reaches the engine?

Filtering fuel before it reaches the engine is crucial for protecting engine components from contaminants. Contaminants such as dirt, rust, water, and microbial growth can accumulate in fuel systems, posing significant risks to engine performance and longevity. If these impurities enter the engine, they can cause wear and damage to critical components such as fuel injectors, pumps, and combustion chambers. By employing filters, the fuel system ensures that these unwanted substances are captured and removed, leading to improved engine reliability, performance, and efficiency. This protective measure ultimately helps in maintaining the integrity of the engine and reduces the likelihood of costly repairs or downtime associated with fuel-related issues.