---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Sun 01/28/18: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:14 AM - Re: Fuel Pressure (Tim Yoder) 2. 01:20 PM - Re: Fuel Pressure (Gary Aman) ________________________________ Message 1 _____________________________________ Time: 11:14:46 AM PST US From: "Tim Yoder" Subject: RE: JabiruEngine-List: Fuel Pressure Bobby, What aircraft do you have? If it is a high wing you shouldn=99t have a problem with fuel starvation. Is your facet pump in series or parallel with mechanical pump? With the facet running I would expect you to see a increase in pressure. I have steam gauges and no fuel pressure gauge but it is gravity fed. Do you have a fuel filter that is dirty? Remove the fuel supply from the carb and measure the fuel flow with the facet pump on. If the flow is proper I would guess it might be the sender. Give Pete at Jabna.com a call. Tim From: owner-jabiruengine-list-server@matronics.com [mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of BobbyPaulk@comcast.net Sent: Saturday, January 27, 2018 2:04 PM Subject: JabiruEngine-List: Fuel Pressure Hope some of you Jabiru gurus are still lurking on the list. I have 292 hrs on my 3300. Over the last year the fuel pressure has slowly dropped. At Cruise it is 1.8 steady but will sometimes dip to 1.1. At run up ( 1200 to 1700 ) it will vary between 1.0 and 2.3. It is very unsettling to get a low pressure alarm on takeoff roll even with boost pump on it drops to .9 at times. I have recently dropped my low pressure alarm from 1.5 to 1.2. It will usually come back up to 1.8 after throttling back to about 2700 rpm. The electric fuel boost pump is only 3 yrs old but the engine pump is original 11 yrs old. Is there a time recommendation for changing out the engine pump and / or the boost pump. The boost pump was bought at NAPA. The engine fuel pump I believe is BCD1875 modified by Jabiru. Electric boost pump is Facet FAC40105. Should be 3 to 4.5 psi. My fuel pressure transducer is 0 to 60 psi. and I am wondering if that could be all of my problem. Dynon recommends 0 to 10 or 20 psi. Any help will be greatly appreciated. Bobby Coming up on age 80 ________________________________ Message 2 _____________________________________ Time: 01:20:11 PM PST US From: Gary Aman Subject: Re: JabiruEngine-List: Fuel Pressure would look first at the fuel transducer.I have 10 years and 1000+hrs on my original facet and factory pump using only 100 octane on my 2200 A > On Jan 27, 2018, at 4:03 PM, BobbyPaulk@comcast.net wrote: > > Hope some of you Jabiru gurus are still lurking on the list. > I have 292 hrs on my 3300. Over the last year the fuel pressure has slowly dropped. > At Cruise it is 1.8 steady but will sometimes dip to 1.1. At run up ( 1200 to 1700 ) it will vary between 1.0 and 2.3. > It is very unsettling to get a low pressure alarm on takeoff roll even with boost pump on it drops to .9 at times. I have recently dropped my low pressure alarm from 1.5 to 1.2. It will usually come back up to 1.8 after throttling back to about 2700 rpm. > The electric fuel boost pump is only 3 yrs old but the engine pump is original 11 yrs old. > Is there a time recommendation for changing out the engine pump and / or the boost pump. The boost pump was bought at NAPA. > > The engine fuel pump I believe is BCD1875 modified by Jabiru. > Electric boost pump is Facet FAC40105. Should be 3 to 4.5 psi. > > My fuel pressure transducer is 0 to 60 psi. and I am wondering if that could be all of my problem. > Dynon recommends 0 to 10 or 20 psi. > > Any help will be greatly appreciated. > > Bobby > Coming up on age 80 > ------------------------------------------------------------------------------------- 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.