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10-27-2013, 05:16 PM
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Join Date: Oct 2008
Location: Hales Corners, WI
Posts: 981
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Oil leak above the oil pan/intake plenum
I have an oil leak. It originates between the crank case halves just above the oil pan/intake plenum. Will torqueing these bolts a bit more seal this or is it a bigger problem? 
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Jesse Bentley
N229Z - RV-8 - Flying - Livin' the dream!
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10-27-2013, 05:29 PM
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Join Date: Oct 2005
Location: Vancouver, WA USA
Posts: 908
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It probably won?t help but it?s also probably not a problem, I have heard some say there engines don?t leak; personally I have never seen a dry Lycoming with more than a hundred hours. If it?s pouring out then ok maybe a problem, if it just has drips hanging off the bottom and everything underneath has a shine of oil on it that?s normal.
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10-27-2013, 05:37 PM
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Join Date: Oct 2008
Location: Utah
Posts: 8,144
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My Leakoming has several spots like yours. It doesn't consume extra oil however. I clean it once in a while with cloth using avgas. You will see these oily spots in some weird places on your engine.
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10-27-2013, 06:24 PM
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Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,343
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Quote:
Originally Posted by Vlad
My Leakoming engine.
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I have one of those engines as well.
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Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
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10-27-2013, 06:29 PM
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Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,778
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Sorry Jesse, that is not a leak. Just a confirmation of a healthy aircraft engine. 
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Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
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10-28-2013, 05:58 AM
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Join Date: Jun 2006
Location: 8I3
Posts: 3,562
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Unfortunately Lycoming and many others still use 60+ year old techniques (silk string) to seal cases halves and they will leak sometimes in short order. In this case it appears the sump gasket was put on dry (another way to ask for leaks) and because of that there is nothing effectively sealing that corner. You might try removing the sump and replacing the gasket with it rubbed on both sides with Titeseal.
And yes they can be made to not leak, I was just looking over the weekend at an A65 Continental I built several years ago that operates several hundred hours a year and it only had some minor seepage around the cylinder bases.
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Please don't PM me! Email only!
Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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10-28-2013, 06:39 AM
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Join Date: Feb 2010
Location: Galveston Area
Posts: 20
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Oil seal
Dang, that Rocketbob always has the best solutions,,, Go Army.
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10-28-2013, 06:43 AM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,665
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Quote:
Originally Posted by csmith3603
Dang, that Rocketbob always has the best solutions,,, Go Army.
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Should only take about "10 minutes" to pull the sump and reseal 
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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10-28-2013, 07:16 AM
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Join Date: Nov 2006
Location: Saint Simons Island , GA
Posts: 1,520
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Come on Walt
Quote:
Originally Posted by Walt
Should only take about "10 minutes" to pull the sump and reseal |
I know this is a tongue in cheek remark..
It really takes about 30
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Jerry "Widget" Morris
RV 8, N8JL, 3,000+ hours on my 8.
VAF #818
Saint Simons Island, GA. KSSI
PIF 2008, 2009, 2010, 2011,2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
 I just wish I could afford to live the way I do 
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10-28-2013, 07:50 AM
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Join Date: Jan 2005
Location: Mtns of N.E. Georgia
Posts: 1,322
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Cheek
Quote:
Originally Posted by RV8iator
I know this is a tongue in cheek remark..
It really takes about 30 |
And that's just to get the cowl off!
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LAUS DEO
Mannan J.Thomason, MSGT. USAF (RET)
VAF788
"Bucket List" checkoff in progress!
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