What is one method for diagnosing fuel metering system issues?

One effective method for diagnosing issues in a fuel metering system is performing a fuel pressure test. This test measures the pressure of the fuel being delivered to the engine and can help identify if the fuel pump is functioning properly, if there are any blockages within the fuel lines, or if the fuel injectors are delivering the correct amount of fuel. Proper fuel pressure is critical for optimal engine performance, and deviations from the specified range can indicate problems that need further investigation.

While inspecting the exterior of the fuel tank or checking tire pressure might be components of regular vehicle maintenance, they don't directly assess the functionality of the fuel metering system. A compression test can provide insights related to engine compression and might highlight issues like worn piston rings or valve problems, but it does not specifically address the fuel delivery process itself, thus making it less effective for diagnosing fuel metering issues compared to a fuel pressure test.