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Bruce Leehan

Fuel issues

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Hi guys,I have ver 1.22 installed and have searched through this forum and through the readme (RW fuel pump behavior) but...I'm still having a weird problem. Whenever I fuel the aircraft, no matter how much gas I put in each tank, the center fuel tank empties down to zero. I am stumped for an answer. Any help would be greatly appreciated.


Bruce Leehan

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Try manually putting the sim on pause first before changing the fuel. This should force the panel to reinitialize the (externally modelled) fuel system with the new quantities when it comes out of pause.RegardsBob ScottATP IMEL Gulfstream II-III-IV-V L-300Santiago de Chile


Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

System1 (P3Dv5/v4): i9-13900KS @ 6.0GHz, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@30Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU, 1.2Gbps internet
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys2 (MSFS/XPlane): i9-10900K @ 5.1GHz, 32GB 3600/15, nVidia RTX4090FE, Alienware AW3821DW 38" 21:9 GSync, EVGA 1000P2
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, 2x TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Portable Sys3 (P3Dv4/FSX/DCS): i9-9900K @ 5.0 Ghz, Noctua NH-D15, 32GB 3200/16, EVGA RTX3090, Dell S2417DG 24" GSync
Corsair RM850x PSU, TM TCA Officer Pack, Saitek combat pedals, TM Warthog HOTAS, Coolermaster HAF XB case

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Will do, thanks. FYI, I noticed that when I refuel during a flight, there is not a problem, so what you suggest makes sense. I'll let ya know. This is an AWESOME airplane!!! Thanks for the help!


Bruce Leehan

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I have the opposite problem. If I try to reduce the fuel from full to a lesser value, when I return to the flight the center (or wing) tank fills back up of it's own volition. The only way I can to make it stop is to change the value in the fuel percentage window rather than the value in the pounds window.

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The TM II is a bit tricky to fuel, like some other addons I have. Many times I get an error message that the quantity must be between XXXXX and XXXXX lbs...even when it is. One thing I've done is to use the percentage number exclusively. I make ONE change, then click "OK", then re-open the fuel window for the next change. Works most of the time.

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>I have the opposite problem. If I try to reduce the fuel from>full to a lesser value, when I return to the flight the center>(or wing) tank fills back up of it's own volition. The only>way I can to make it stop is to change the value in the fuel>percentage window rather than the value in the pounds window.Same advice...put the sim on pause, then change the fuel. The panel reinitializes the fuel system (which is modelled externally) when it sees the sim coming out of pause. The fuel system is actually modelled independently of FS and every 5 sec or so the panel writes the new fuel quantities out to FS to get the w/b right.The percentage window may or may not work, same as the lbs selection. But changes made in pause mode should be reliable.CheersBob ScottATP IMEL Gulfstream II-III-IV-V L-300Santiago de Chile


Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

System1 (P3Dv5/v4): i9-13900KS @ 6.0GHz, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@30Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU, 1.2Gbps internet
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys2 (MSFS/XPlane): i9-10900K @ 5.1GHz, 32GB 3600/15, nVidia RTX4090FE, Alienware AW3821DW 38" 21:9 GSync, EVGA 1000P2
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, 2x TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Portable Sys3 (P3Dv4/FSX/DCS): i9-9900K @ 5.0 Ghz, Noctua NH-D15, 32GB 3200/16, EVGA RTX3090, Dell S2417DG 24" GSync
Corsair RM850x PSU, TM TCA Officer Pack, Saitek combat pedals, TM Warthog HOTAS, Coolermaster HAF XB case

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> The TM II is a bit tricky to fuel, like some other addons I>have. Many times I get an error message that the quantity must>be between XXXXX and XXXXX lbs...even when it is. One thing>I've done is to use the percentage number exclusively. I make>ONE change, then click "OK", then re-open the fuel window for>the next change. Works most of the time.Yes, this is a FS bug...believe it's a function of fuel quantity computations being rounded. But 100% can do the same thing. If I have the problem, I drop the qty about 10 lbs below the listed max and that seems to work OK.CheersBob ScottATP IMEL Gulfstream II-III-IV-V L-300Santiago de Chile


Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

System1 (P3Dv5/v4): i9-13900KS @ 6.0GHz, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@30Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU, 1.2Gbps internet
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys2 (MSFS/XPlane): i9-10900K @ 5.1GHz, 32GB 3600/15, nVidia RTX4090FE, Alienware AW3821DW 38" 21:9 GSync, EVGA 1000P2
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, 2x TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Portable Sys3 (P3Dv4/FSX/DCS): i9-9900K @ 5.0 Ghz, Noctua NH-D15, 32GB 3200/16, EVGA RTX3090, Dell S2417DG 24" GSync
Corsair RM850x PSU, TM TCA Officer Pack, Saitek combat pedals, TM Warthog HOTAS, Coolermaster HAF XB case

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Yep, definitely an FS bug and in no way the fault of all the fine addons which experience it! Vic

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