---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Sun 06/10/18: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:02 PM - Fuel valve siphoning across? (Phillip Perry) 2. 04:21 PM - Re: Fuel valve siphoning across? (Bob Leffler) 3. 04:40 PM - Re: Fuel valve siphoning across? (Carl Froehlich) 4. 04:43 PM - Re: Fuel valve siphoning across? (Neil Corella) 5. 06:14 PM - Re: Fuel valve siphoning across? (Phillip Perry) 6. 06:34 PM - Re: Fuel valve siphoning across? (Lenny Iszak) ________________________________ Message 1 _____________________________________ Time: 04:02:30 PM PST US From: Phillip Perry Subject: RV10-List: Fuel valve siphoning across? I had a first time experience this weekend. We flew into Tradewind airport (Amarillo) for the weekend and I parked the airplane on a ramp that was slightly sloped. Topped off the tanks, tied it down, and left it for a few days. We got ready to leave today and I popped open the uphill-most tank to inspect fuel levels and a good amount of fuel had disappeared. My first thought was that it was stolen. The downhill tank was full to the rim and dripping fuel at the vent. Judging from the stains, it appears fuel was dripping out of the vent the entire weekend. So, apparently I was cross feeding fuel from the uphill tank to the downhill tank, then from the downhill tank out the vent line to the ground. I topped off the uphill tank with 2.8 gal. When full, the vent on that tank dripped fuel, so I knew its was not blocked. The only path would be leakage inside the andair fuel valve body. I have always left the fuel valve on the last tank used, as opposed to moving it to the off position. It just seems safer that way as its one less thing to miss that could kill you. Heres the question, have any of you see siphoning across the andair fuel selector valve in the -10? Is that normal or am I dealing with a leaky valve? Phil Sent from my iPhone ________________________________ Message 2 _____________________________________ Time: 04:21:16 PM PST US From: Bob Leffler Subject: Re: RV10-List: Fuel valve siphoning across? I would have thought that to be physically impossible. Even with a tank selected, the fuel path is to the engine, not the other ta nk. Keep us posted on what you find. Get Outlook for iOS ________________________________ From: owner-rv10-list-server@matronics.com on behalf of Phillip Perry Sent: Sunday, June 10, 2018 7:00:22 PM Subject: RV10-List: Fuel valve siphoning across? I had a first time experience this weekend. We flew into Tradewind airport (Amarillo) for the weekend and I parked the airplane on a ramp that was sl ightly sloped. Topped off the tanks, tied it down, and left it for a few days. We got ready to leave today and I popped open the uphill-most tank to inspe ct fuel levels and a good amount of fuel had disappeared. My first thought was that it was stolen. The downhill tank was full to the rim and dripping fuel at the vent. Judgi ng from the stains, it appears fuel was dripping out of the vent the entire weekend. So, apparently I was cross feeding fuel from the uphill tank to the downhil l tank, then from the downhill tank out the vent line to the ground. I topped off the uphill tank with 2.8 gal. When full, the vent on that ta nk dripped fuel, so I knew it=92s was not blocked. The only path would be leakage inside the andair fuel valve body. I have always left the fuel valve on the last tank used, as opposed to movi ng it to the off position. It just seems safer that way as it=92s one les s thing to miss that could kill you. Here=92s the question, have any of you see siphoning across the andair fuel selector valve in the -10? Is that normal or am I dealing with a leaky v alve? Phil Sent from my iPhone ________________________________ Message 3 _____________________________________ Time: 04:40:24 PM PST US From: Carl Froehlich Subject: Re: RV10-List: Fuel valve siphoning across? If you leave a 90 degree throw Andair fuel valve in between the left and rig ht tank, it will (somewhat) cross connect the tanks. Carl > On Jun 10, 2018, at 4:19 PM, Bob Leffler wrote: > > I would have thought that to be physically impossible. > > Even with a tank selected, the fuel path is to the engine, not the other t ank. > > Keep us posted on what you find. > > Get Outlook for iOS > From: owner-rv10-list-server@matronics.com on behalf of Phillip Perry > Sent: Sunday, June 10, 2018 7:00:22 PM > To: rv10-list@matronics.com > Subject: RV10-List: Fuel valve siphoning across? > > > I had a first time experience this weekend. We flew into Tradewind airpor t (Amarillo) for the weekend and I parked the airplane on a ramp that was sl ightly sloped. > > Topped off the tanks, tied it down, and left it for a few days. > > We got ready to leave today and I popped open the uphill-most tank to insp ect fuel levels and a good amount of fuel had disappeared. My first thought was that it was stolen. > > The downhill tank was full to the rim and dripping fuel at the vent. Judg ing from the stains, it appears fuel was dripping out of the vent the entire weekend. > > So, apparently I was cross feeding fuel from the uphill tank to the downhi ll tank, then from the downhill tank out the vent line to the ground. > > I topped off the uphill tank with 2.8 gal. When full, the vent on that t ank dripped fuel, so I knew it=99s was not blocked. > > The only path would be leakage inside the andair fuel valve body. > > I have always left the fuel valve on the last tank used, as opposed to mov ing it to the off position. It just seems safer that way as it=99s o ne less thing to miss that could kill you. > > Here=99s the question, have any of you see siphoning across the anda ir fuel selector valve in the -10? Is that normal or am I dealing with a l eaky valve? > > Phil > > > > > > > Sent from my iPhone > ========== > Email Forum - > -List">http://www.matronics.com/Navigator?RV10-List > ========== > p; - MATRONICS WEB FORUMS - > ums.matronics.com > ========== > p; - NEW MATRONICS LIST WIKI - > matronics.com > ========== > p; - List Contribution Web Site - > p; -Matt Dralle, List Admin. > http://www.matronics.com/contribution > ========== > > > ________________________________ Message 4 _____________________________________ Time: 04:43:34 PM PST US From: Neil Corella Subject: Re: RV10-List: Fuel valve siphoning across? Yes I believe I have also. Tank levels get different depending on how plane is parked. I always Shut valve off now. Neil Sent from my iPhone > On Jun 10, 2018, at 7:00 PM, Phillip Perry wrote: > > > I had a first time experience this weekend. We flew into Tradewind airport (Amarillo) for the weekend and I parked the airplane on a ramp that was slightly sloped. > > Topped off the tanks, tied it down, and left it for a few days. > > We got ready to leave today and I popped open the uphill-most tank to inspect fuel levels and a good amount of fuel had disappeared. My first thought was that it was stolen. > > The downhill tank was full to the rim and dripping fuel at the vent. Judging from the stains, it appears fuel was dripping out of the vent the entire weekend. > > So, apparently I was cross feeding fuel from the uphill tank to the downhill tank, then from the downhill tank out the vent line to the ground. > > I topped off the uphill tank with 2.8 gal. When full, the vent on that tank dripped fuel, so I knew its was not blocked. > > The only path would be leakage inside the andair fuel valve body. > > I have always left the fuel valve on the last tank used, as opposed to moving it to the off position. It just seems safer that way as its one less thing to miss that could kill you. > > Heres the question, have any of you see siphoning across the andair fuel selector valve in the -10? Is that normal or am I dealing with a leaky valve? > > Phil > > > > > > > Sent from my iPhone > > > ________________________________ Message 5 _____________________________________ Time: 06:14:22 PM PST US From: Phillip Perry Subject: Re: RV10-List: Fuel valve siphoning across? This one was in the detent, but I highly suspect it was leaking between the p orts in the valve body housing. Sent from my iPhone > On Jun 10, 2018, at 6:38 PM, Carl Froehlich w rote: > > If you leave a 90 degree throw Andair fuel valve in between the left and r ight tank, it will (somewhat) cross connect the tanks. > > Carl > >> On Jun 10, 2018, at 4:19 PM, Bob Leffler wrote: >> >> I would have thought that to be physically impossible. >> >> Even with a tank selected, the fuel path is to the engine, not the other t ank. >> >> Keep us posted on what you find. >> >> Get Outlook for iOS >> >> From: owner-rv10-list-server@matronics.com on behalf of Phillip Perry >> Sent: Sunday, June 10, 2018 7:00:22 PM >> To: rv10-list@matronics.com >> Subject: RV10-List: Fuel valve siphoning across? >> >> >> I had a first time experience this weekend. We flew into Tradewind airpo rt (Amarillo) for the weekend and I parked the airplane on a ramp that was s lightly sloped. >> >> Topped off the tanks, tied it down, and left it for a few days. >> >> We got ready to leave today and I popped open the uphill-most tank to ins pect fuel levels and a good amount of fuel had disappeared. My first though t was that it was stolen. >> >> The downhill tank was full to the rim and dripping fuel at the vent. Jud ging from the stains, it appears fuel was dripping out of the vent the entir e weekend. >> >> So, apparently I was cross feeding fuel from the uphill tank to the downh ill tank, then from the downhill tank out the vent line to the ground. >> >> I topped off the uphill tank with 2.8 gal. When full, the vent on that t ank dripped fuel, so I knew it=99s was not blocked. >> >> The only path would be leakage inside the andair fuel valve body. >> >> I have always left the fuel valve on the last tank used, as opposed to mo ving it to the off position. It just seems safer that way as it=99s o ne less thing to miss that could kill you. >> >> Here=99s the question, have any of you see siphoning across the and air fuel selector valve in the -10? Is that normal or am I dealing with a l eaky valve? >> >> Phil >> >> >> >> >> >> >> Sent from my iPhone >> ========== >> Email Forum - >> -List">http://www.matronics.com/Navigator?RV10-List >> ========== >> p; - MATRONICS WEB FORUMS - >> ums.matronics.com >> ========== >> p; - NEW MATRONICS LIST WIKI - >> matronics.com >> ========== >> p; - List Contribution Web Site - >> p; -Matt Dralle, List Admin. >> http://www.matronics.com/contribution >> ========== >> >> >> ________________________________ Message 6 _____________________________________ Time: 06:34:56 PM PST US From: Lenny Iszak Subject: Re: RV10-List: Fuel valve siphoning across? Was it hot outside? I live in Florida and this happens to me often. The plane is red and black, fuel in the tank gets hot, expands and just drips out the vents. Lenny > On Jun 10, 2018, at 9:11 PM, Phillip Perry wrote: > > This one was in the detent, but I highly suspect it was leaking between the ports in the valve body housing. > > Sent from my iPhone > > On Jun 10, 2018, at 6:38 PM, Carl Froehlich wrote: > >> If you leave a 90 degree throw Andair fuel valve in between the left and right tank, it will (somewhat) cross connect the tanks. >> >> Carl >> >> On Jun 10, 2018, at 4:19 PM, Bob Leffler wrote: >> >>> I would have thought that to be physically impossible. >>> >>> Even with a tank selected, the fuel path is to the engine, not the other tank. >>> >>> Keep us posted on what you find. >>> >>> Get Outlook for iOS >>> From: owner-rv10-list-server@matronics.com on behalf of Phillip Perry >>> Sent: Sunday, June 10, 2018 7:00:22 PM >>> To: rv10-list@matronics.com >>> Subject: RV10-List: Fuel valve siphoning across? >>> >>> >>> I had a first time experience this weekend. We flew into Tradewind airport (Amarillo) for the weekend and I parked the airplane on a ramp that was slightly sloped. >>> >>> Topped off the tanks, tied it down, and left it for a few days. >>> >>> We got ready to leave today and I popped open the uphill-most tank to inspect fuel levels and a good amount of fuel had disappeared. My first thought was that it was stolen. >>> >>> The downhill tank was full to the rim and dripping fuel at the vent. Judging from the stains, it appears fuel was dripping out of the vent the entire weekend. >>> >>> So, apparently I was cross feeding fuel from the uphill tank to the downhill tank, then from the downhill tank out the vent line to the ground. >>> >>> I topped off the uphill tank with 2.8 gal. When full, the vent on that tank dripped fuel, so I knew its was not blocked. >>> >>> The only path would be leakage inside the andair fuel valve body. >>> >>> I have always left the fuel valve on the last tank used, as opposed to moving it to the off position. It just seems safer that way as its one less thing to miss that could kill you. >>> >>> Heres the question, have any of you see siphoning across the andair fuel selector valve in the -10? Is that normal or am I dealing with a leaky valve? >>> >>> Phil >>> >>> >>> >>> >>> >>> >>> Sent from my iPhone >>> ========== >>> Email Forum - >>> -List">http://www.matronics.com/Navigator?RV10-List >>> ========== >>> p; - MATRONICS WEB FORUMS - >>> ums.matronics.com >>> ========== >>> p; - NEW MATRONICS LIST WIKI - >>> matronics.com >>> ========== >>> p; - List Contribution Web Site - >>> p; -Matt Dralle, List Admin. >>> http://www.matronics.com/contribution >>> ========== ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv10-list Browse Digests http://www.matronics.com/digest/rv10-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.