---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Mon 09/21/09: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:28 AM - Re: Oil problem (Thom Riddle) 2. 07:17 AM - Re: Oil problem (Pete Krotje) 3. 08:49 AM - Re: Re: Oil problem (pj.ladd) 4. 09:50 AM - Re: Re: Oil problem (Kayberg@aol.com) ________________________________ Message 1 _____________________________________ Time: 04:28:24 AM PST US Subject: JabiruEngine-List: Re: Oil problem From: "Thom Riddle" Pat, If your engine has the VDO oil pressure sending unit, that could be the problem. They are notorious for low indication after some time in service. If you can get your hands on an accurate mechanical oil pressure gauge to confirm the actual oil pressure under same conditions, this should help you diagnose the source of the low reading. I have both a mechanical oil pressure gauge installed and the VDO sending unit giving its signal to the Grand Rapids EIS. The EIS oil pressure reading is generally about 5-7 psi lower than the mechanical gauge. -------- Thom Riddle Buffalo, NY Kolb Slingshot SS-021 Jabiru 2200A #1574 Tennessee Prop 64x34 A complex system that works is invariably found to have evolved from a simple system that works. - John Gaule Read this topic online here: http://forums.matronics.com/viewtopic.php?p=264093#264093 ________________________________ Message 2 _____________________________________ Time: 07:17:42 AM PST US From: "Pete Krotje" Subject: RE: JabiruEngine-List: Oil problem More likely the oil pressure sending unit Pete -----Original Message----- From: owner-jabiruengine-list-server@matronics.com [mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of pj.ladd Sent: Sunday, September 20, 2009 4:23 PM Subject: JabiruEngine-List: Oil problem hi, I run a jabi 2200 on a Kolb 3xtra microlight her in the UK and have a problem On starting the oil pressure goes at once to its proper place but over about 10 minutes it starts to decay. In half an hour it is right back at the start of the yellow quadrant. I am no mechanic but I think filter and pump as the first place to investigate. Any comments? Only about 70 hours on the engine. Cheers Pat ________________________________ Message 3 _____________________________________ Time: 08:49:33 AM PST US From: "pj.ladd" Subject: Re: JabiruEngine-List: Re: Oil problem If your engine has the VDO oil pressure sending unit, that could be the problem.>> Hi Thom. Flew to a repairer about 30 minutes away this morning. The fix which he suggested involved removing the filter and putting another washer behind the spring which keeps the relief valve from opening. Thinking was that if the spring is a bit weak the relief valve is opening at too low a pressure. this seemed to make sense but as he didn`t have a replacement filter we decided to postpone the job for a couple of days. However while furkling about we noticed the the VDO sensor was just touching the exhaust pipe so we moved the exhaust about 1/4 inch. Flying home the pressure didn`t drop below 200. Has this fixed the problem?. maybe. Further flying required and by the time I landed it had got so rough I did not want to fly again so i wait for another window. Thanks everyone for their input. It may be needed yet. Cheers Pat ________________________________ Message 4 _____________________________________ Time: 09:50:27 AM PST US From: Kayberg@aol.com Subject: Re: JabiruEngine-List: Re: Oil problem Pat, The advice you got from Pete at USJabiru was not from ignorance. It was from the largest dealer of Jabiru engines and aircraft in the world. The senders frequently have problems. Change washers only after you change the sender. Doug Koenigsberg In a message dated 9/21/2009 11:50:02 A.M. Eastern Daylight Time, pj.ladd@btinternet.com writes: --> JabiruEngine-List message posted by: "pj.ladd" If your engine has the VDO oil pressure sending unit, that could be the problem.>> Hi Thom. Flew to a repairer about 30 minutes away this morning. The fix which he suggested involved removing the filter and putting another washer behind the spring which keeps the relief valve from opening. Thinking was that if the spring is a bit weak the relief valve is opening at too low a pressure. this seemed to make sense but as he didn`t have a replacement filter we decided to postpone the job for a couple of days. However while furkling about we noticed the the VDO sensor was just touching the exhaust pipe so we moved the exhaust about 1/4 inch. Flying home the pressure didn`t drop below 200. Has this fixed the problem?. maybe. Further flying required and by the time I landed it had got so rough I did not want to fly again so i wait for another window. Thanks everyone for their input. It may be needed yet. Cheers Pat ------------------------------------------------------------------------------------- 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.