---------------------------------------------------------- MurphyMoose-List Digest Archive --- Total Messages Posted Tue 01/19/10: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:33 AM - Re: Murphy Moose-List: Fuel System Schematic for M14 engines. (George Coy) ________________________________ Message 1 _____________________________________ Time: 06:33:40 AM PST US From: "George Coy" Subject: MurphyMoose-List: RE: Murphy Moose-List: Fuel System Schematic for M14 engines. We are dealing with a pressure carb here not a float carburetor. If it was in series with a mechanical pump that is not turning, then it would not allow fuel pressure for starting. Be sure to use an electric pump with the built in check valve. They make them both ways. The built in check valve style for 24v is P/N 40194. The 12v part number is 40176. Both are available from Aircraft Spruce. If you plan to use a fuel flow gage then put it at the outlet of the of the de-bubbler. The M14P carb has an extra fitting by the fuel inlet. In some cases people use this to measure the fuel pressure. As usual on a fuel pressure line we recommend a restrictor in the line at the point where it is measured. Usually a rivet installed in the flair fitting as a plug with a 1/16 or smaller hole in it. If the flexible hose to measure fuel pressure were to break then the indicated pressure would go to zero and alarm the pilot, but stuffiest pressure would remain to keep the engine running. George Coy Motorstar NA 714 Airport Rd. Swanton VT 05488 802-868-5633 off 802-363-5782 cell george.coy@gmail.com SKYPE george.coy motorstarna.com ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message murphymoose-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/MurphyMoose-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/murphymoose-list Browse Digests http://www.matronics.com/digest/murphymoose-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.