I need help with start engine

Hi all, I’m developing an aircraft that use Rotax 912 as engine. In the
cockpit there isn’t the Mixture lever. there is the Fuel selector. I have
putted in the cockpit the first things to understand how they works. there is
the Throttle lever ( works ) , battery switch (works ) , avionic switch (
works) , fuel selector (works ), magnetos key ( works ) but if I try to start
the engine, it run for seconds than die. CTRL + E works fine… The fuel tanks
and quantity are configurated in Aircraft editor, as Fuel system I used ( but
seen in other planes anyway ) the Legacy configuration because I’m learning
and I try with the simple method. I checked my Engine, Flight model etc CFG
file with other similar planes, seems to be all necessary but my engine won’t
start without use CTRL E. In the Engine debug window , I can see I have not
Fuel pressure
when I attempt to start it. For Fuel section, in the
Flightmodel.cfg file I have seen that I have about the same lines as the
default Asobo VL3 aircraft, but My engine won’t start… which parameters of
Aircraft Editor I have to check , or cfg files , or my interior xml file to
find what I’m missing ? I tryied also to configure the “modern” Fuel
configuration in Aircraft editor , hoping to solve, following this real fuel
plan of my aircraft, but I’m in confusion with the fuel pumps and lines… I
tryed this configuration but won’t work

From line 3 to line 7 I have
used a similar configuration of the example in the sdk documentation but got
me into confusion [FUEL_SYSTEM] Engine.1 = Name:Rotax 912 UL#Title:Rotax 912
UL#Index:1 Tank.1 = Name:Left
tank#Capacity:14.3#UnusableCapacity:0.64#Position:-1.828,-4.008,-0.677#OutputOnlyLines:LTankToFuelSelector#Priority:1
Tank.2 = Name:Right
tank#Capacity:14.3#UnusableCapacity:0.64#Position:1.828,4.008,0.677#Priority:1
Line.1 =
Name:LTankToFuelSelector#Title:LTankToFuelSelector#Source:LeftMain#Destination:FuelSelector
Line.2 =
Name:RTankToFuelSelector#Title:RTankToFuelSelector#Source:RightMain#Destination:FuelSelector
Line.3 =
Name:FuelSelectorToCutoffValve#Title:FuelSelectorToCutoffValve#Source:FuelSelector#Destination:CutoffValve
Pump.1 =
Name:EngineDrivenPump#Title:EngineDrivenPump#Pressure:19#PressureCurve:1#DestinationLine:#Type:#Index:1#AutoCondition:Rotax
912 UL:0 Line.4 =
Name:CutoffValveToBoosterPump#Title:CutoffValveToBoosterPump#Source:CutoffValve#Destination:BoosterPump
Line.5 =
Name:BoosterPumpToEngineDrivenPump#Title:BoosterPumpToEngineDrivenPump#Source:BoosterPump#Destination:EngineDrivenPump
Line.6 =
Name:EngineDrivenPumpToCutoffValve2#Title:EngineDrivenPumpToCutoffValve2#Source:EngineDrivenPump#Destination:CutoffValve2
Line.7 =
Name:CutoffValve2ToEngine#Title:CutoffValve2ToEngine#Source:CutoffValve2#Destination:Engine
Valve.1 = Name:CutoffValve#Title:CutoffValve#Circuit:1 Valve.2 =
Name:CutoffValve2#Title:CutoffValve2#Circuit:2 Thanks…

Hello @conradsm I will investigate your problem, can you send me your package
(see [3) provide private
content](https://devsupport.flightsimulator.com/articles/5483/how-to-report-a-
bug-or-crash.html)) Best Regards, Yohan

Hi Yohan I have found the issue. I have had the following instruction as False
instead True: “FuelValveOpen” in the files apron.flt , hangar.flt and taxi.flt
now the engine starts with battery on, fuel selector on left or right and
ignition with magnetos key to test I have used again the Legacy mode for Fuel
system. Next I will try the modern mode. thanks anyway .