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I would suggest not flying your ship until you discover why your header tank is depleting. The header tank only receives fuel two ways: fuel pumped up to it by the fuel pump. or fuel poured into it on the ground through its cap. It literally cannot get fuel any other way. If your header tank is depleting but your wing tanks appear full, look for a stoppage in the line between your wing tanks and the header tank, or look for a bad fuel pump. The simplest stoppage in the line is a closed wing-tank valve, located forward of, and below the passenger's seat. Cycle that valve a couple of times first to see whether it's clogged or even shut off. Fly the ship and observe. If that didn't work, then disconnect the fuel pump outlet, divert it into a container, and crank the engine a few times. The pump should spurt much fuel into the container. If it doesn't, then you've isolated the problem. If it spurts a lot of fuel, then you have a constriction in your fuel line between the pump and the header tank. If during your researches, you discover ANY white sediment anywhere in the lines or pump, don't fly the ship until you pull the carb float bowl and clean it. Generally speaking, I suggest a serious attempt to locate and remove the obstruction. It was my experience in the military -- long ago when dinosaurs roamed the earth -- that failure to insure a fuel supply adequate to complete the mission can in some cases reduce the pilot's time at the Officer's Club that evening. R. Beeman ----- Original Message ----- From: "john jameson" <[EMAIL PROTECTED]> To: "Ercoupe Technical Discussion (moderated)" <[email protected]> Sent: Friday, May 27, 2005 11:08 PM Subject: [COUPERS-TECH] fuel flow question > ----[Please read http://ercoupers.com/disclaimer.htm before following any > advice in this forum.]---- > > > hello all! i just flew my 415-c tonight for the first time since its > annual inspection this week. i noticed that my header tank seemed to be > losing fuel even though my wing tanks were plenty full. > > my mechanic had earlier told me he replaced "some fuel lines" during the > annual. > > i was going to fill my header tank tomorrow and fly a little more to > confirm the situation. does anyone have any suggestions for me to > proceed? > > john jameson > > ========================================================================== ==== > To leave this forum go to: http://ercoupers.com/lists.htm > Search the archives on http://escribe.com/aviation/coupers-tech/ > > > > ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
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