Nothing was touched in regard to the fuel system. It flew great for me last Friday, yet started over-flowing during the next flight.
Well, if it's not the pump pumping too much then it has to be the return not returning enough. When the tank level is near the top added fuel will make the level increase at a faster rate due to the necking of the tank. I suppose this could account for the behavior of the float. As long as there is not excess pressure in the wing tanks and the line is open, the fuel should never get above the level of the return line in the header tank. John Cooper Skyport Services 4996 Delaware Tnpk Rensselaerville, NY 12147 518 797-3064 www.skyportservices.net _____ From: Richard Todd [mailto:[EMAIL PROTECTED] Sent: Thursday, July 03, 2008 2:18 PM To: 'TECH-FORUM'; John Cooper Cc: [EMAIL PROTECTED] Subject: RE: [ercoupe-tech] Header Fuel Tank: Rapid Over-Flowing??? Nothing was touched in regard to the fuel system. It flew great for me last Friday, yet started over-flowing during the next flight. Richard --- On Thu, 7/3/08, John Cooper <[EMAIL PROTECTED]> wrote: From: John Cooper <[EMAIL PROTECTED]> Subject: RE: [ercoupe-tech] Header Fuel Tank: Rapid Over-Flowing??? To: [EMAIL PROTECTED], "'TECH-FORUM'" <[email protected]> Cc: [EMAIL PROTECTED] Date: Thursday, July 3, 2008, 10:42 AM Sounds like someone removed the restrictor fitting from the fuel pump. The fitting should limit pump output to about 8 gallons an hour. This should preclude the level raising fast enough to watch. John Cooper Skyport Services 4996 Delaware Tnpk Rensselaerville, NY 12147 518 797-3064 www.skyportservices .net _____ From: ercoupe-tech@ yahoogroups. com [mailto:ercoupe- [EMAIL PROTECTED] .com] On Behalf Of Richard Todd Sent: Thursday, July 03, 2008 1:23 PM To: TECH-FORUM Cc: rtrdrotordrvr@ webtv.net Subject: [ercoupe-tech] Header Fuel Tank: Rapid Over-Flowing? ?? Hello all, after completing the Paint/Polish scheme on our Coupe, I took it for a test flight last Friday evening. The plane looked great and flew perfectly. My partner took it for a flight yesterday and advised that when he reduced power on final approach, fuel began to over-flow rapidly from the header tank. As he would add power to the throttle, the over-flow was reduced but not stopped. As you reduce throttle power, the over-flow increases a great deal. I attempted to take it for a test flight this morning to observe the over-flow issue myself. As I was taxiing, I noticed the header tank filling by watching the float indicator go higher than usual. It then began a pretty heavy over-flow to where fuel was running down the cowling. At that point I just chopped power to avoid a fire. Now as it sits in my hangar, the fuel float is back to where it should be. It's acting as though the fuel return back to the wing tanks has slowed. It appears that the fuel pump is sending fuel to the header tank faster than it's returning to the wing tanks. Does this sound like a partial clog in the header tanks return lines, or could something else be causing this issue? I did check the vents on all 3 fuel caps, and they are clear. Other than that. I'm at a loss. Any advice will be appreciated. Thanks, Richard
