Hello, I am working on a automotive fuel system for a school project and one of the problems is not enough fuel at higher rpm's. Would a larger fuel line help this problem? The pump has been determined that it should be powerful enough for the necessary supply and wondering if there can be improvements made in the plumbing itself to solve this problem. I have yet to take fluid mechanics but from my understanding the flow rate will stay the same throughout the fuel system but the fuel will be harder to pump through a smaller line due to more pressure(friction) loss. But where all this gets confusing for me is since there is a pressure regulator, how much does all this stuff about pressure lost matter? My theory is that since there is a bigger pressure loss through a smaller line, it takes longer for the pressure regulator to build up the necessary fuel pressure in a smaller line versus a larger one, therefore making it harder for the fuel supply to keep up with the engine needs at higher rpm's. Can I get some confirmation on this whether its accurate or inaccurate? Also if someone can help me make sense of how big of a factor bends in the line make and help make sense of plumbing in general as in some basic laws in designing a good plumbing system. Thanks, any info and additional resources greatly appreciated.(adsbygoogle = window.adsbygoogle || []).push({});

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Will the fuel system benefit from a larger fuel line?

**Physics Forums | Science Articles, Homework Help, Discussion**