Depends if youre a plumber or a refrigeration tech. And here is the fuel pressure reading after turning the key on and priming the system.
John Deere A Fuel Line
How to measure fuel line. One end the port end of the fitting can be described as a male open ended cylinder with tapered thread also called pipe thread on the outer diameter. Place the top of a 14 inch wrench with an open end over the fuel line. Lots of strange information out on the internet regarding fuel line sizing and it seems like most of the time people run way more diameter fuel line than they need. Quick reference for an to inch line conversion 6an 38 8an 12 10an 58 12an 34. Do not remove the fuel line or disconnect it. Tubing is od outside diameter and pipe is id inside diameter.
The first is the length of the fuel line the longer it is the more friction will be incurred. So the easiest way to tell the size of your fuel line which is tubing is to use a combination wrench. Simply attach the fuel pressure gauge to the fuel rail and turn the key on you can start the engine if it runs to take a fuel pressure reading. Slide it carefully over the line so that it fits snugly. Uncover the fuel line so that it is visible and can be reached easily. This is an interesting article that i came across that seems to be pretty relevant.
Shows the relationship between measured pressure drop as a function of flow rate for four different fuel lines two different sizes at two different lengths. The second is flow rate as the rate is increased so is friction. Whichever one slips over snuggly is the winner. The fuel pressure test port is on the fuel rail on the drivers side of the engine. How to measure a fuel line diameter. Pipe fittings pipe fittings can be used to connect fuel lines to the port on a fuel pump or fuel pressure regulator as well as connect fuel pressure gauges to gauge ports.
Gallery of How To Measure Fuel Line
