Schematic (or anyone else), you may have already done up something for this in the past, but I would like to make me an inexpensive fuel flow measurement guage. I can't see paying $100 to $300 for a small sensor and an indicator if it is not going to be permanent on the boat.<br /><br />I would be initially be measuring fuel for a 50 HP Mariner (4-stroke), so my GPH flow would be between 0 to 5 gph. I have 5/16' fuel lines, and I know most impeller style sensors need to be calibrated to the fuel line diamenter.<br /><br />I would not leave it permanently installed on the boat, so that I could use it on other boats as needed, to help friends out. I'd probably power it either by internal battery, or use a 12 volt plug on the boat.<br /><br />Any ideas welcome.
