What maintenance practices help prolong fuel metering system life?

• A. Ignore hose wear and leaks.
• B. Using contaminated fuel improves metering accuracy.
• C. Regular fuel filter changes, using clean fuel, inspecting hoses/lines for wear, and checking for leaks.
• D. Rely on diagnostic codes alone.

Answer: (C)

Keeping the fuel metering system healthy comes down to removing contaminants and preventing leaks that throw off fuel flow and pressure. Regular fuel filter changes ensure debris and water are kept out of the injectors, sensors, and metering valves. Using clean fuel prevents deposits that can clog metering passages and alter flow. Inspecting hoses and lines for wear and leaks stops air leaks and pressure loss that would cause the metering system to read or regulate fuel inaccurately and can lead to component damage or failure. Checking for leaks also supports safety by preventing fuel exposure. Diagnostic codes are useful for diagnosing issues but cannot replace routine maintenance. Relying on contaminated fuel or ignoring wear will accelerate wear and shorten life.