It seems that the 'default' fuel management is broken in FSX Acceleration. I first encounteredthis in the Aerosim L-1011 but i've now found it effects a bunch of aircraft, from what I cansee its anything that uses what I'm gonna call 'sim native' fuel management.In other words, the payware planes like PMDG that do their own fuel handling will not beeffected, but builtin 747 is, and for instance, CLS planes are plagued with this.What happens is the only one tank is actually used, I have not yet determined if its morecomplicated than that, meaning, if you have a LEFT tank and ALSO a left aux or somethingif it will drain both, but when I have flown with just right, center, and left with fuel in themit will just suck MOSTLY (not exclusively, it seems to take a bit from the others) from left,and when that runs dry the engines shut down.Here is my question, I hope someone here knows more about these internals than I do,where is this default fuel management code, is it in a gauge, a dll, ANYWHERE that I canremove and replace it with FSX SP2 version (which does not have the issue)?It seems like the planes that do not have any defined gauge in the aircraft.cfg are theones that are screwed by this, so its probably not in a gauge.Anyone have any workarounds, I mostly like Acceleration, I can definitely see betterperformance, but this is a fatal bug to me and I will uninstall the turkey if there's noother solution.SHAME on you Microsoft for letting a product with a bug this nasty not get fixed!!! (ya,I know, like that's a new one :) )It occurs to me that if there was any plane out there with a custom XML fuel gauge itmight solve this??Cheers all,

I figured this out, I do not know if this problem will hit anyone installingAcceleration or if even though I do not remember it, I did it somewherealong the way.The problem illustrates one of the design issues with the sim, IMHO. What was happening was the Default Flight, which in my case was aCessna, had the fuel tank selector valve set to LEFT rather than BOTH,and YUP this was causing a problem on the 747, the L-1011, the Lear,probably others, a problem which in the bigger planes there was noway of "fixing", that is from that plane.Once I finally found it in the default Cessna, I switched it to BOTH, thenresaved the Default, and of course, it fixed everything else.Sigh....

I figured this out, I do not know if this problem will hit anyone installingAcceleration or if even though I do not remember it, I did it somewherealong the way.The problem illustrates one of the design issues with the sim, IMHO. What was happening was the Default Flight, which in my case was aCessna, had the fuel tank selector valve set to LEFT rather than BOTH,and YUP this was causing a problem on the 747, the L-1011, the Lear,probably others, a problem which in the bigger planes there was noway of "fixing", that is from that plane.Once I finally found it in the default Cessna, I switched it to BOTH, thenresaved the Default, and of course, it fixed everything else.Sigh....

Jack,I just discovered this glitch recently when my 743 turned turtle and crashed in the Pacific Ocean. So what did you do to fix? You simply started a flight with the default Cessena, changed the fuel selector to both, then saved the flight? That's all? Nothing else? If so, that's great!Stephen

So really the problem wasn't caused by Microsoft or Acceleration after all? But after 2 pages of ranting and raving no mention of User Error?

So really the problem wasn't caused by Microsoft or Acceleration after all? But after 2 pages of ranting and raving no mention of User Error?

C'mon Jim: this is the 21st century: everyone knows there's no accountability for anything! :(

So really the problem wasn't caused by Microsoft or Acceleration after all? But after 2 pages of ranting and raving no mention of User Error?

Actually, I believe it WAS caused by Acceleration, as I said, I never touched the fuel selector, would have no reason to.And you know what, the problem has been seen by a number of people, it appeared over in the CLS forums. SO, whileyou're on here insulting someone, who er USED to be your customer, I'm just trying to leave data that might help others.Have a nice day!

Actually, I believe it WAS caused by Acceleration, as I said, I never touched the fuel selector, would have no reason to.And you know what, the problem has been seen by a number of people, it appeared over in the CLS forums. SO, whileyou're on here insulting someone, who er USED to be your customer, I'm just trying to leave data that might help others.Have a nice day!

This sort of problem is usually caused by a user who loads a flight and then changes the aircraft to another type. Some of the original aircraft's parameters are carried over to the new aircraft. The only way that I know of to load a new aircraft into FSX (or FS9 for that matter) is to load up the genuine MS default flight and then change aircraft. As an example I got hit by this "bug" in FS9 when I loaded a Flight1 PC-12 after using another piston engine prop aircraft. I couldn't get the PC12 to fly at its top speed. What had happened was that I had set the prop pitch of the original Aircraft I was using to a cruise setting. The PC-12 doesn't have a prop pitch control but the setting of the original prop pitch was saved invisibly with the new PC12 flight reducing the power available on the PC-12. It took me three days to find this out. Bug or not we have to live with the way it is and go by the rules of the game: Load up the original MS Default Flight then swap aircraft and save that flight as your starting point for using the new aircraft in the future. I wonder how many other users have been bitten by this idiosyncrasy and complained about the model developer?

Jack,Maybe look to the fuel selector and change it. If a plane is set to use the left tank, that is what it will use. Set it to Both and FS will use both. Not really an Acceleration problem or issue.

More often than not, nowadays, the dev teams are creating aircraft that are increasing closer to "the real thing" than those of years gone by. I find myself going through a much more in-depth checklist just to ensure the aircraft is ready for flight - than I ever did, say four years ago. Take the A2A P47/AccuSim or the LSH Maddog. Chances are you are not getting airborne in either of these with a Ctrl-E.

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