---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Mon 12/09/13: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:26 AM - Restart the engine after a flight (Max Cointe (Free)) 2. 07:08 AM - Re: Restart the engine after a flight (Jonathan@Entry.co.za) 3. 08:20 AM - Re: Restart the engine after a flight (Pete Christensen) 4. 09:06 AM - Re: Restart the engine after a flight (Vernon Mitchell) 5. 04:20 PM - Re: Restart the engine after a flight (Hugh McKay) 6. 08:03 PM - Re: Restart the engine after a flight (Roger Lee) ________________________________ Message 1 _____________________________________ Time: 06:26:26 AM PST US From: "Max Cointe (Free)" Subject: RotaxEngines-List: Restart the engine after a flight Hi There All, I have a 912ULS mounted on an Europa XS with almost 500 hours which runs perfectly=85 when it runs: - Cold start is easy and ok even in cold weather (assuming battery is correctly charged and can drive the engine to 600 rpm) - Restart after a 30 minutes stop following a flight is difficult with bubbles visible via the overflow tube creating irregular run and smell of gasoline. After few (long) seconds it comes back to normal and shows no other symptoms. Any advice? Max Cointe mcointe@free.fr F-PMLH Europa XS_TriGear Kit #560-2003 912ULS/AirmasterAP332 490 hours F-PLDJ Dyn=92A=E9ro MCR 4S Kit #27-2002 912ULSFR/MTProp MTV7A 1600 heures ________________________________ Message 2 _____________________________________ Time: 07:08:45 AM PST US From: "Jonathan@Entry.co.za" Subject: Re: RotaxEngines-List: Restart the engine after a flight Hi Max, Do you have a Return to tank? I have had the same problem for 500+hrs. I do NOT have a return to tank. I found it to be a build up of pressure in the fuel line, under the cowl of my Zenith CH601XLb. (All the heat seems to come out of the engine.) The fuel pump has a check valve, and hence the fuel will not return on it's own. All I do now is switch off the fuel, when taxiing to the hangar, and when I stop I open the oil filler cowl flap, to let out the hot air. The lack of fuel in the lines, (used up in the taxi) and the little bit of extra cooling seems to have helped a lot with this rich start problem. I also find that if I let it stand for an hour, the problem also goes away. Hope this helps Jonathan ----- Original Message ----- From: Max Cointe (Free) To: rotaxengines-list@matronics.com Sent: Monday, December 09, 2013 4:25 PM Subject: RotaxEngines-List: Restart the engine after a flight Hi There All, I have a 912ULS mounted on an Europa XS with almost 500 hours which runs perfectly. when it runs: - Cold start is easy and ok even in cold weather (assuming battery is correctly charged and can drive the engine to 600 rpm) - Restart after a 30 minutes stop following a flight is difficult with bubbles visible via the overflow tube creating irregular run and smell of gasoline. After few (long) seconds it comes back to normal and shows no other symptoms. Any advice? Max Cointe mcointe@free.fr F-PMLH Europa XS_TriGear Kit #560-2003 912ULS/AirmasterAP332 490 hours F-PLDJ Dyn'A=E9ro MCR 4S Kit #27-2002 912ULSFR/MTProp MTV7A 1600 heures ________________________________ Message 3 _____________________________________ Time: 08:20:56 AM PST US Subject: Re: RotaxEngines-List: Restart the engine after a flight From: Pete Christensen Sounds like flooding. I turn off my fuel valve and let it run awhile before shutting down. Seems to take care of that problem. Pete Leander, Tx On Dec 9, 2013, at 8:25 AM, "Max Cointe (Free)" wrote: > Hi There All, > > I have a 912ULS mounted on an Europa XS with almost 500 hours which runs p erfectly when it runs: > - Cold start is easy and ok even in cold weather (assuming batter y is correctly charged and can drive the engine to 600 rpm) > - Restart after a 30 minutes stop following a flight is difficult with bubbles visible via the overflow tube creating irregular run and smell of gasoline. After few (long) seconds it comes back to normal and shows no o ther symptoms. > Any advice? > > Max Cointe > mcointe@free.fr > F-PMLH Europa XS_TriGear > Kit #560-2003 912ULS/AirmasterAP332 490 hours > > F-PLDJ Dyn=99A=C3=A9ro MCR 4S > Kit #27-2002 912ULSFR/MTProp MTV7A 1600 heures > > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= ________________________________ Message 4 _____________________________________ Time: 09:06:17 AM PST US From: "Vernon Mitchell" Subject: Re: RotaxEngines-List: Restart the engine after a flight I had the same problem. Balanced the carbs, and all was well. Vernon. From: Pete Christensen Sent: Monday, December 09, 2013 6:20 PM Subject: Re: RotaxEngines-List: Restart the engine after a flight Sounds like flooding. I turn off my fuel valve and let it run awhile before shutting down. Seems to take care of that problem. Pete Leander, Tx On Dec 9, 2013, at 8:25 AM, "Max Cointe (Free)" wrote: Hi There All, I have a 912ULS mounted on an Europa XS with almost 500 hours which runs perfectly when it runs: - Cold start is easy and ok even in cold weather (assuming battery is correctly charged and can drive the engine to 600 rpm) - Restart after a 30 minutes stop following a flight is difficult with bubbles visible via the overflow tube creating irregular run and smell of gasoline. After few (long) seconds it comes back to normal and shows no other symptoms. Any advice? Max Cointe mcointe@free.fr F-PMLH Europa XS_TriGear Kit #560-2003 912ULS/AirmasterAP332 490 hours F-PLDJ Dyn=99A=C3=A9ro MCR 4S Kit #27-2002 912ULSFR/MTProp MTV7A 1600 heures ========= ctric.com >www.buildersbooks.com uilthelp.com otstore.com matronics.com/contribution ========= st">http://www.matronics.com/Navigator?RotaxEngines-List ========= cs.com ========= ________________________________ Message 5 _____________________________________ Time: 04:20:31 PM PST US From: "Hugh McKay" Subject: Re: RotaxEngines-List: Restart the engine after a flight Don=92t know your fuel piping situation, but it clearly sounds like you are flooding the engine. If you have an electric fuel pump in line with the mechanical pump that is on the engine turn the electric pump off and try starting the engine using the Rotax start procedure for a hot or warm engine. Don=92t use the cold engine start procedure. Hugh G. McKay III, P.E. Senior Consultant Worldwide Engineering Inc. 4090 North NC Hwy. 16 Denver, NC 28037 Ph. 704-661-8271 Fax 704-483-5466 email hgmckay@bellsouth.net http://www.wwegeo.com From: Vernon Mitchell Sent: Monday, December 09, 2013 12:05 PM Subject: Re: RotaxEngines-List: Restart the engine after a flight I had the same problem. Balanced the carbs, and all was well. Vernon. From: Pete Christensen Sent: Monday, December 09, 2013 6:20 PM Subject: Re: RotaxEngines-List: Restart the engine after a flight Sounds like flooding. I turn off my fuel valve and let it run awhile before shutting down. Seems to take care of that problem. Pete Leander, Tx On Dec 9, 2013, at 8:25 AM, "Max Cointe (Free)" wrote: Hi There All, I have a 912ULS mounted on an Europa XS with almost 500 hours which runs perfectly when it runs: - Cold start is easy and ok even in cold weather (assuming battery is correctly charged and can drive the engine to 600 rpm) - Restart after a 30 minutes stop following a flight is difficult with bubbles visible via the overflow tube creating irregular run and smell of gasoline. After few (long) seconds it comes back to normal and shows no other symptoms. Any advice? Max Cointe mcointe@free.fr F-PMLH Europa XS_TriGear Kit #560-2003 912ULS/AirmasterAP332 490 hours F-PLDJ Dyn=99A=C3=A9ro MCR 4S Kit #27-2002 912ULSFR/MTProp MTV7A 1600 heures ========= ctric.com >www.buildersbooks.com uilthelp.com otstore.com matronics.com/contribution ========= st">http://www.matronics.com/Navigator?RotaxEngines-List ========= cs.com ========= href="http://www.aeroelectric.com">www.aeroelectric.com href="http://www.buildersbooks.com">www.buildersbooks.com href="http://www.homebuilthelp.com">www.homebuilthelp.com href="http://www.mypilotstore.com">www.mypilotstore.com href="http://www.mrrace.com">www.mrrace.com href="http://www.matronics.com/contribution">http://www.matronics.com/c href="http://www.matronics.com/Navigator?RotaxEngines-List">http://www. matronics.com/Navigator?RotaxEngines-List href="http://forums.matronics.com">http://forums.matronics.com ________________________________ Message 6 _____________________________________ Time: 08:03:41 PM PST US Subject: RotaxEngines-List: Re: Restart the engine after a flight From: "Roger Lee" Hi Max, As someone ask, do you have an electric pump? Are you starting with just a single pump? Are you using the choke on the second start? What is the idle set for (after it warms)? Do you apply any throttle during the start? When was the last time you did a carb sync? What are your plugs gapped at? These all play an important part and if you can fill in these questions I would bet we can help. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Repair Center - Heavy Maint. 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