What could happen if a fuel system operates at excessive pressure?

Operating a fuel system at excessive pressure can lead to potential fuel leaks or damage to components. Fuel systems are designed to function within specific pressure limits that ensure the proper operation of fuel injectors, pumps, and various connections. When pressure exceeds these designed limits, it can cause seals and gaskets to fail, leading to leaks. Furthermore, high pressure can stress fuel lines and components, resulting in cracks or ruptures, which poses a significant safety risk and can lead to fuel spilling onto hot engine parts, increasing the risk of fire.

Understanding fuel system pressures and the implications of exceeding them is crucial for maintaining safety and reliability. Proper pressure allows for optimal fuel atomization and combustion, whereas excessive pressure disrupts this balance, potentially leading to damage rather than improvements in efficiency, performance, or emissions.