---------------------------------------------------------- Allegro-List Digest Archive --- Total Messages Posted Sat 08/09/08: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:47 PM - Fuel Cap Leak () 2. 04:08 PM - Fuel Cap Leak (Amy Hackworth) 3. 05:24 PM - Re: Fuel Cap Leak (Hugh) 4. 07:17 PM - Fuel Cap Leakage (Amy Hackworth) ________________________________ Message 1 _____________________________________ Time: 12:47:42 PM PST US From: Subject: Allegro-List: Fuel Cap Leak Gentlemen: I have an Allegro 2000, and am experiencing some fuel leakage out of the main belly tank fuel cap (Plug). I believe the fuel is leaking out of the key slot where you lock the fuel cap. At least the indication is that it is coming from the key slot. There are streaks of fuel stain along the side of the fuselage, and the source is clearly coming from the key slot. When the cap is in place, closed and locked, the orientation of the key slot is at three o'clock, and the plastic tab that rotates is at nine o'clock. Can some one tell me if they have had a problem like this? Could I have the cap itself rotated to the wrong position (i.e. is the key slot suppose to be at a different position on the clock when the cap is in place and closed? Hugh McKay Allegro 2000 Rotax 912 UL N661WW ________________________________ Message 2 _____________________________________ Time: 04:08:30 PM PST US From: "Amy Hackworth" Subject: Allegro-List: Fuel Cap Leak Hugh, I have a 2006 Allegro 2000 and had the same cap leakage problem. I ended up sealing the keyhole with form a gasket and it leaked only a tiny bit afterward and then has sealed itself for good. Aircraft Spruce offers the same cap without the lock if you want to spend the money. I am having problems with the fuel tank bleeder on the belly of the plane. It keeps getting clogged with large black particles (nearly every time I check the fuel for water). I can't figure out where they are coming from, but have to remove the mechanism and blow it out each time because it won't spring back up and seal. I thought it might be the black silicone the fuel level sensor is held in with, but after removing the remainder of that material I'm still getting particles. By the way, I flushed the tank twice before filling the first time and have checked the fuel cans as well. Incidently, I have changed the o ring to the latest version and can see that it is still in good shape. Any ideas??? Dale Hackworth 2006 Allegro 2000 Amphib N306AD Hobe Sound, FL ________________________________ Message 3 _____________________________________ Time: 05:24:18 PM PST US From: "Hugh" Subject: RE: Allegro-List: Fuel Cap Leak Dale: Do I understand you just forgot about locking the fuel cap and completely sealed the key hole? If you did what did you use to seal it with that would not deteriate from coming in contact with gasoline? Is "Form a Gasket" a material? Please explain this in more detail. I understand the fiberglass belly tank of the Allegro is coated, or "lined" inside with some type of material to prevent the fuel from coming in contact with the fiberglass itself. The black material may be part of this lining. I am guessing, but that is all I can think of at this point. I hope it is not the lining, because I don't know how one would fix that type problem. Have you asked The US Distributor if this has ever occurred before? However, based on my experience with them, you won't get an answer. Hugh McKay _____ From: owner-allegro-list-server@matronics.com [mailto:owner-allegro-list-server@matronics.com] On Behalf Of Amy Hackworth Sent: Saturday, August 09, 2008 7:08 PM Subject: Allegro-List: Fuel Cap Leak Hugh, I have a 2006 Allegro 2000 and had the same cap leakage problem. I ended up sealing the keyhole with form a gasket and it leaked only a tiny bit afterward and then has sealed itself for good. Aircraft Spruce offers the same cap without the lock if you want to spend the money. I am having problems with the fuel tank bleeder on the belly of the plane. It keeps getting clogged with large black particles (nearly every time I check the fuel for water). I can't figure out where they are coming from, but have to remove the mechanism and blow it out each time because it won't spring back up and seal. I thought it might be the black silicone the fuel level sensor is held in with, but after removing the remainder of that material I'm still getting particles. By the way, I flushed the tank twice before filling the first time and have checked the fuel cans as well. Incidently, I have changed the o ring to the latest version and can see that it is still in good shape. Any ideas??? Dale Hackworth 2006 Allegro 2000 Amphib N306AD Hobe Sound, FL ________________________________ Message 4 _____________________________________ Time: 07:17:53 PM PST US From: "Amy Hackworth" Subject: Allegro-List: Fuel Cap Leakage Hugh, Yes, I did seal off the key hole on my fuel cap. I will be at the hangar tomorrow and will forward the exact name of the material I used. Yes, I did contact Allegro about the black particals, but they reported no trouble on any of their planes. I'll keep studying the situation and will let everyone know if I find a solution. Thanks, Dale Hackworth ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message allegro-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Allegro-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/allegro-list Browse Digests http://www.matronics.com/digest/allegro-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.