---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Mon 06/18/12: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:28 AM - Fuel Pump (BobbyPaulk@comcast.net) 2. 08:14 AM - Re: Fuel Pump (Pete Krotje) 3. 09:20 AM - Re: Fuel Pump (GERALD A. APPLEFELD) ________________________________ Message 1 _____________________________________ Time: 06:28:46 AM PST US From: BobbyPaulk@comcast.net Subject: JabiruEngine-List: Fuel Pump List I have the Dynon engine monitor in my 601 with the Low Fuel pressure set to 2.0 psi. This past Sat on take off roll the pressure went to 1.8 and the alarm sounded. I hit the boost pump and elected to keep going when the pressure came up to 2.3 Psi. At altitude (1500' ) I turned off the boost pump after reducing power and the pressure stabilized at 2.4 psi. I decide to experiment with throttle settings and at full power the pressure again went to 1.8 psi. This happened 3 or 4 times with the same result. Normally the pressure stays at 2.3 or 2.4 at full throttle. Taxiing out the pressure is stable at 3.0. As an old plumber I understand that when the flow increases the pressure will drop somewhat. My question is two fold. Is this a sign of the pump failing soon?? How long should the fuel pump last ( hours )? Also what would be a minimum safe pressure at take off power? I would like to hear from Pete at Jabiru USA on this issue. Thank you Bobby ( age 74 ) Zodiac 601 XL "B" Jabiru 3300 S/N 1141 Sensenich 64" x 51" Prop Bing Carb 260 Main & 285 Needle Jet Status - Flying 153 hrs. ________________________________ Message 2 _____________________________________ Time: 08:14:19 AM PST US From: "Pete Krotje" Subject: RE: JabiruEngine-List: Fuel Pump Minimum fuel pressure is 0.5 psi. I would set your alarm to a more realistic number of .5 to 1.0 psi. Fuel pumps last a long time and have been relatively trouble free. I think I=99ve only sold a half dozen in 12 years with 2300 engines out there. Pete Krotje Jabiru USA Sport Aircraft, LLC 2842 Hwy 231N Shelbyville, TN 37160 931-680-2800 From: owner-jabiruengine-list-server@matronics.com [mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of BobbyPaulk@comcast.net Sent: Monday, June 18, 2012 8:28 AM Subject: JabiruEngine-List: Fuel Pump List I have the Dynon engine monitor in my 601 with the Low Fuel pressure set to 2.0 psi. This past Sat on take off roll the pressure went to 1.8 and the alarm sounded. I hit the boost pump and elected to keep going when the pressure came up to 2.3 Psi. At altitude (1500' ) I turned off the boost pump after reducing power and the pressure stabilized at 2.4 psi. I decide to experiment with throttle settings and at full power the pressure again went to 1.8 psi. This happened 3 or 4 times with the same result. Normally the pressure stays at 2.3 or 2.4 at full throttle. Taxiing out the pressure is stable at 3.0. As an old plumber I understand that when the flow increases the pressure will drop somewhat. My question is two fold. Is this a sign of the pump failing soon?? How long should the fuel pump last ( hours )? Also what would be a minimum safe pressure at take off power? I would like to hear from Pete at Jabiru USA on this issue. Thank you Bobby ( age 74 ) Zodiac 601 XL "B" Jabiru 3300 S/N 1141 Sensenich 64" x 51" Prop Bing Carb 260 Main & 285 Needle Jet Status - Flying 153 hrs. ________________________________ Message 3 _____________________________________ Time: 09:20:15 AM PST US From: "GERALD A. APPLEFELD" Subject: Re: JabiruEngine-List: Fuel Pump Bobby, I would check your fuel filter. Sounds like restricted flow at time of greatest need (high RPM), only need for minimal flow (idle/cruise) Jerry On 6/18/2012 9:28 AM, BobbyPaulk@comcast.net wrote: > List > I have the Dynon engine monitor in my 601 with the Low Fuel pressure > set to 2.0 psi. This past Sat on take off roll the pressure went to > 1.8 and the alarm sounded. I hit the boost pump and elected to keep > going when the pressure came up to 2.3 Psi. At altitude (1500' ) I > turned off the boost pump after reducing power and the pressure > stabilized at 2.4 psi. I decide to experiment with throttle settings > and at full power the pressure again went to 1.8 psi. This happened 3 > or 4 times with the same result. Normally the pressure stays at 2.3 or > 2.4 at full throttle. Taxiing out the pressure is stable at 3.0. As > an old plumber I understand that when the flow increases the pressure > will drop somewhat. My question is two fold. Is this a sign of the > pump failing soon?? How long should the fuel pump last ( hours )? > Also what would be a minimum safe pressure at take off power? > > I would like to hear from Pete at Jabiru USA on this issue. > Thank you > > Bobby ( age 74 ) > Zodiac 601 XL "B" > Jabiru 3300 S/N 1141 > Sensenich 64" x 51" Prop > Bing Carb 260 Main & 285 Needle Jet > Status - Flying 153 hrs. > > > * > > > * ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message jabiruengine-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/JabiruEngine-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/jabiruengine-list Browse Digests http://www.matronics.com/digest/jabiruengine-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.