---------------------------------------------------------- LycomingEngines-List Digest Archive --- Total Messages Posted Thu 05/29/14: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:08 PM - Re: Induction leaks where and how did you find them (FLYaDIVE) 2. 05:53 PM - Re: Induction leaks where and how did you find them (Neal George) ________________________________ Message 1 _____________________________________ Time: 04:08:54 PM PST US Subject: Re: LycomingEngines-List: Induction leaks where and how did you find them From: FLYaDIVE Ralph: If you suspect an Intake Leak on ONLY one cylinder keep your search small. Start by: 1. REMOVING the Intake Tube. 2. Replace the Intake Gasket. 3. AND seal it with High Temp RTV. 4. CLEAN the mating surfaces. 5. Replace the rubber connection between the Intake Tube and the Engine 6. Replace the Hose Clamps with GOOD clamps of a know brand - BREEZE Corp. Clamps. 7. Now, this is a tricky one - I had many engine problems and lost my #1 cyl in flight at least 3 times... I lost count! The problem was: There are TWO DIFFERENT thicknesses for the intake pipe and the mounting clamp/flange. IF you have a thin intake tube and a counter bored mounting clamp for a thick tube you WILL have an intake leak. The way to check this is: When you insert the intake tube in the clamp the Top of the Tube will be FLUSH with the top of the mounting flange. If it sits below someone messed up. I will be reading this thread, I am VERY interested is finding out if anyone has tricks on checking for Intake Leaks. One Trick that I know of is to take CO2 gas and spray it around the intake joint points. IF there is a leak the engine will stumble. This trick is Better than water as it is a gas and can be controlled with a small diameter pipe that can be aimed. Also no spray back. Best of luck, Barry "Chop'd Liver" On Tue, May 27, 2014 at 1:38 PM, Ralph E. Capen wrote: > recapen@earthlink.net> > > Folks, > > I'm still chasing a small induction leak impacting only my #1 cylinder. > I'm trying to list all of the potential places and methods of testing. > > Places so far: > > Upper injection port fitting or plug > Injection fitting assembly > Lower injection port fitting or plug > Intake runner in sump > Intake runner connecting hose > Intake runner pipe > Intake runner gasket at cylinder head > Valve cover gasket > Rocker arm oil drain fitting at engine case > Rocker arm oil drain fitting connection hose > Rocker arm oil drain fitting at cylinder head > (last four most likely with loose intake valve guide as a leak path > contributor) > > Testing methods so far: > Tighten worm clamp screws > Replace gasket > Replace hose > Spraying water on suspected area with engine running (DANGER WILL > ROBINSON!) > > Where have you found them and how have you found them? > > Thanks, > Ralph Capen > RV6A N822AR "Patience" @ N06 with 210 hrs on IO360B1F6 with AFP Injection > > ________________________________ Message 2 _____________________________________ Time: 05:53:51 PM PST US From: Neal George Subject: Re: LycomingEngines-List: Induction leaks where and how did you find them Gentlemen - You will not find RTV listed among the approved sealants for either brand o f engine. The only place it is acceptable is sealing gaps in baffles. Neal George Continental Motors Technical Support / Customer Service Sent from my iPhone 1. Replace the Intake Gasket. 2. AND seal it with High Temp RTV. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message lycomingengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/LycomingEngines-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/lycomingengines-list Browse Digests http://www.matronics.com/digest/lycomingengines-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.