----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
Response below, Ed -----Original Message----- From: Dan Mooney [mailto:[EMAIL PROTECTED] Sent: Tuesday, May 17, 2005 9:49 AM To: [EMAIL PROTECTED] Subject: RE: [COUPERS-TECH] FUEL SYSTEM This is what I observed just last night. After pushing the plane out the two wing tanks were full. The nose tank fuel gage was about one inch above the bottom of the glass.(these are the new gages from Skyport) I filled the nose tank. Within minutes the nose tank fuel gage was going down. It overflowed the wing tanks. With or without fuel in the wing tanks the nose tank starts to drain into the wing tank as soon as the fuel level in the nose tank gets above one inch on the fuel gage. It does not drain the nose tank any lower than about one inch from the bottom on the nose fuel gage. Dan Mooney Dan, The fuel gauge should normally be about 3-4 inches up from the lid. Since yours is only an inch above the lid, we can assume you do have a problem. (Note that you NEVER should normally fill the nose tank unless you've used fuel out of it in flight after emptying the wing tanks or having a fuel pump failure. I only added fuel to the nose tank about 10 times in 23 years.) Now, we need to confirm if it's a bad standpipe or draining through the fuel pump. This test is easy. Just turn off the right side-wall fuel line valve - that's the fuel line from the wing tanks to the fuel pump. With that off, add some fuel to the nose tank. If you fill the nose tank too much, it WILL overflow through the overflow tube as it's supposed to. So, just add an inch or inch and a half on the gauge (a gallon) then wait and see what happens. If it still drains to the wings and overflows, with the fuel valve closed, then you have a bad standpipe. If it stays up until you open the fuel valve, you have a leaking check-valve in the incoming fuel line. Ed Burkhead http://edburkhead.com ed -at- edburkhead???.com (replace -at- with @ and remove ???) ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
<<attachment: winmail.dat>>
