---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Sun 06/25/23: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:24 AM - oil seep (dlm) 2. 11:04 AM - Re: oil seep (Lenny Iszak) 3. 11:39 AM - Re: oil seep (Don McDonald) ________________________________ Message 1 _____________________________________ Time: 10:24:50 AM PST US From: dlm Subject: RV10-List: oil seep Recently new oil and filter installed on IO540 D4A5. We added about 9.5 quarts on the stick. During the annual we opened and serviced (SB) the magnetos. We checked the strainer and removed/replaced the quick drain. We opened and closed five items.- These all check negative for seeps. Yet after seven days uncowled in the hangar, oil continues to seep slowly externally down the fuel pump drain line. I have also checked oil return lines. We are beginning to believe we may have overfilled the oil system. Any feedback from others? Virus-free.www.avast.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> ________________________________ Message 2 _____________________________________ Time: 11:04:02 AM PST US From: Lenny Iszak Subject: Re: RV10-List: oil seep Could be a broken oil diaphragm in the fuel pump. Check out this pump teardown from Dan's site: https://www.danhorton.net/VAF/High%20Fuel%20Pressure/Fuel%20Pump%20Dismantl ed.docx The oil sump holds 12 qts in the D4A5, per Lycoming specs. The excess oil would just come out the breather. Lenny On Sun, Jun 25, 2023 at 1:36=AFPM dlm wrote: > Recently new oil and filter installed on IO540 D4A5. We added about 9.5 > quarts on the stick. > During the annual we opened and serviced (SB) the magnetos. We checked th e > strainer and removed/replaced the quick drain. We opened and closed five > items.- These all check negative for seeps. Yet after seven days uncowled > in the hangar, oil continues to seep slowly externally down the fuel pump > drain line. I have also checked oil return lines. We are beginning to > believe we may have overfilled the oil system. Any feedback from others? > > > > Virus-free.www.avast.com > > <#m_1223495995127093501_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > ________________________________ Message 3 _____________________________________ Time: 11:39:38 AM PST US From: Don McDonald Subject: Re: RV10-List: oil seep In 13 year and 1,300 hours I've never put more than 7 quarts in mine.Don =C2- On Sunday, June 25, 2023 at 01:17:36 PM CDT, Lenny Iszak wrote: Could be a broken oil diaphragm in the fuel pump. Check out this pump teardown from Dan's site:https://www.danhorton.net/VAF/ High%20Fuel%20Pressure/Fuel%20Pump%20Dismantled.docx The oil sump=C2-holds 12 qts in the D4A5, per Lycoming=C2-specs. The ex cess oil would just come out the=C2-breather. Lenny On Sun, Jun 25, 2023 at 1:36=AFPM dlm wrote: Recently=C2-new=C2-oil and filter installed on IO540 D4A5. We added abo ut 9.5 quarts on the stick.During the annual we opened and serviced (SB) th e magnetos. We checked the strainer and removed/replaced the quick drain. W e opened and closed five items.- These all check negative=C2-for seeps. Y et after seven days uncowled in the hangar, oil continues to seep slowly ex ternally down the fuel pump drain line. I have also checked oil return line s. We are beginning to believe we may have overfilled the oil system. Any f eedback from others? | | Virus-free.www.avast.com | ------------------------------------------------------------------------------------- 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.