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I'm not with Laminar Research, just a fellow simmer in the UK, but have you properly configured your throttle flight controls within X-Plane 11's joystick settings page, as per the photo below?
I'm not sure what aircraft you are flying or which flight control set you are using, but you may also have to select the 'reverse axis' check box to get the mixture to work correctly?
PS Under no circumstances should you be using any third party software to configure your flight control system, as it all can be done within X-Plane 11's settings pages!
When I try the normal start procedure the engines wont start,with the mixtures at 0 the plane wouldn't even open the start valve, so when you move the engine switch to continuous Ignition nothing happens. Once I had this issue and for a brief moment it went away and things worked fine, and it's back again.
I am not from Laminar Research; just a flight simmer from downunder.
What Greengolfer15 means by "3rd party software" for your hardware, especially the software products like your throttle quadrant, is the Saitek software or now Logitech.software. It just does not work despite having a new brand name.
X-Plane is unlike other flight sim packages. All hardware, irrespective of the brand, has to be installed through X-Plane. Not even through your operating system or using software supplied with the item. If you have already installed the saitek software on your PC then you need to remove all remnants of the software from your system using a good quality file removal package. While the removal process is under way find all of your saitek discs for all products and then dig a deep hole in your back yard and bury it, never to be seen again.
Good luck in finding a solution.
I sometimes swap between my Thrustmaster joystick and my Logitech yoke setup and this has never caused me a problem before!
Anyway, all of the original discussion about flight controls began simply because I thought your problem was related to the mixture control, such as that you would find in a GA aircraft such as a Cessna or Beechcraft Baron.
However, it now appears that the problem is not being able to spool up the engines in a Zibo 737 and similar airliners.
Before we go any further, please confirm that my assumption is correct?
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