Vinny002 Posted October 29, 2014 Share Posted October 29, 2014 Hi, guys! I did the engine startup procedures correctly but the right engine won't start. Any ideas? Thanks! Cheers, Vincent Link to comment Share on other sites More sharing options...
Buzzles Posted October 29, 2014 Share Posted October 29, 2014 Can you post a track so we can have a look at what you're doing? Fancy trying Star Citizen? Click here! Link to comment Share on other sites More sharing options...
Mike Busutil Posted October 29, 2014 Share Posted October 29, 2014 Are you using the Thrustmaster A-10C HOTAS? I have seen guys miss the engine operate switch was in the wrong position for start. [sIGPIC][/sIGPIC] Checkout my user files here: https://www.digitalcombatsimulator.com/en/files/?CREATED_BY=Mike%20Busutil&set_filter=Y Link to comment Share on other sites More sharing options...
Wrecking Crew Posted October 29, 2014 Share Posted October 29, 2014 Usually it is because the right engine pumps are not running. Four toggle switches on the left hand panel. WC Visit the Hollo Pointe DCS World server -- an open server with a variety of COOP & H2H missions including Combined Arms. All released missions are available for free download, modification and public hosting, from my Wrecking Crew Projects site. Link to comment Share on other sites More sharing options...
Vinny002 Posted October 30, 2014 Author Share Posted October 30, 2014 Hi, guys! I restarted the computer, loaded up DCS world and now I got both the left/right engines running. I don't know about this, sometimes the right engine start and sometimes it doesn't and I think it's random. I found something that doesn't seem right, the both the left/right engines can be started and the left/right engines continues running even with the left/right wing fuel boost pumps off and the left/right fuselage fuel boost pumps off. Thanks! Cheers, Vincent Link to comment Share on other sites More sharing options...
Dudester22 Posted October 30, 2014 Share Posted October 30, 2014 Hi, guys! I found something that doesn't seem right, the both the left/right engines can be started and the left/right engines continues running even with the left/right wing fuel boost pumps off and the left/right fuselage fuel boost pumps off. Thanks! Cheers, Vincent Maybe some fuel left in the pipes? How long do they keep running for? Link to comment Share on other sites More sharing options...
Vinny002 Posted October 30, 2014 Author Share Posted October 30, 2014 Hi, dudester22! The left/right engines was running for about 20 minutes even with the left/right wing fuel boost pumps off and the left/right fuselage fuel boost pumps off and the left/right engines has never stopped running. Thanks! Cheers, Vincent Link to comment Share on other sites More sharing options...
Dudester22 Posted October 30, 2014 Share Posted October 30, 2014 (edited) Hi, dudester22! The left/right engines was running for about 20 minutes even with the left/right wing fuel boost pumps off and the left/right fuselage fuel boost pumps off and the left/right engines has never stopped running. Thanks! Cheers, Vincent I just tried it myself and I can start both engines and run them with all fuel pumps set to off. maybe somehow the engine still gets fuel without the pumps though? Anyone know? Edit: I just read this about aircraft in general. Fuel pumps are not required to be on and are mainly used to keep fuel distribution within limits. 99.9% of all aircraft have 2 or 3 fuel pumps per engine. The boost pump in the tank is just there to keep the secondary fuel pump from cavitating. On start the fuel control which consists of 2 pumps that run in series or parallel are set to parallel which increases flow but lowers pressure...... I could go on forever, but your answer in simple terms is that fuel boost pumps are mainly used to maintain proper fuel distribution. Edited October 30, 2014 by Dudester22 Link to comment Share on other sites More sharing options...
PFunk1606688187 Posted October 30, 2014 Share Posted October 30, 2014 In my experience you can start the Left Engine without the boost pumps because it will feed off the DC boost pump which is energized by the DC bus which is itself energized once the Inverter is switched on, if I remember the schematics properly. DC Boost pump feeds off the Left fuel system so it can support the Left engine which also feeds off that system. The right system is however isolated and so the Right Engine needs a boost pump to start it. Alternatively enabling crossfeed would allow you to start the Right Engine with the Left Fuel System. Again, as I understand it, the boost pumps while not being necessary to sustain fuel flow are necessary to start the engine. Warning: Nothing I say is automatically correct, even if I think it is. Link to comment Share on other sites More sharing options...
Boris Posted October 30, 2014 Share Posted October 30, 2014 Also, make sure your left engine has completely cycled up before you start the right. PC Specs / Hardware: MSI z370 Gaming Plus Mainboard, Intel 8700k @ 5GHz, MSI Sea Hawk 2080 Ti @ 2100MHz, 32GB 3200 MHz DDR4 RAM Displays: Philips BDM4065UC 60Hz 4K UHD Screen, Pimax 8KX Controllers / Peripherals: VPC MongoosT-50, Thrustmaster Warthog HOTAS, modded MS FFB2/CH Combatstick, MFG Crosswind Pedals, Gametrix JetSeat OS: Windows 10 Home Creator's Update Link to comment Share on other sites More sharing options...
Vinny002 Posted October 30, 2014 Author Share Posted October 30, 2014 Hi, guys! It is very strange. Like I said earlier, sometimes the right engine start or won't start, and it is random. Does anyone experiences this kind of problem? I hate random bugs!! Thanks! Cheers, Vincent Link to comment Share on other sites More sharing options...
MagicBra Posted October 30, 2014 Share Posted October 30, 2014 I'm sure you've already checked but did you have you inverter and pomps on before starting the engine. Else you'll have only on engine starting. Else you may have to dry it off (pomps off, engine on until it stops by lack of fuel) and make it start again. VEAF - Virtual European Air Force- www.veaf.org Association européenne de simulation évoluant sur DCS, BMS et ArmA3. Nous rejoindre : http://www.veaf.org/fr/association/formulaire-de-contact Link to comment Share on other sites More sharing options...
Boris Posted October 30, 2014 Share Posted October 30, 2014 Hi, guys! It is very strange. Like I said earlier, sometimes the right engine start or won't start, and it is random. Does anyone experiences this kind of problem? I hate random bugs!! Thanks! Cheers, Vincent If you post a track of you doing the start-up we might be able to see if you go wrong somewhere. This is not a bug I've ever experienced. Next time this happens, quit the mission and click on "save track". Then remember where the track file is and attach it to your next post. PC Specs / Hardware: MSI z370 Gaming Plus Mainboard, Intel 8700k @ 5GHz, MSI Sea Hawk 2080 Ti @ 2100MHz, 32GB 3200 MHz DDR4 RAM Displays: Philips BDM4065UC 60Hz 4K UHD Screen, Pimax 8KX Controllers / Peripherals: VPC MongoosT-50, Thrustmaster Warthog HOTAS, modded MS FFB2/CH Combatstick, MFG Crosswind Pedals, Gametrix JetSeat OS: Windows 10 Home Creator's Update Link to comment Share on other sites More sharing options...
QuiGon Posted October 30, 2014 Share Posted October 30, 2014 Two things: - Turn on the 4 boost pumps. - Wait until the left engine is completly up and running (the engine startup warning on the warning panel will disappear) before you start the right engine. For further help a track file would be really helpful. Intel i7-12700K @ 8x5GHz+4x3.8GHz + 32 GB DDR5 RAM + Nvidia Geforce RTX 2080 (8 GB VRAM) + M.2 SSD + Windows 10 64Bit DCS Panavia Tornado (IDS) really needs to be a thing! Link to comment Share on other sites More sharing options...
macieksoft Posted October 31, 2014 Share Posted October 31, 2014 In my experience you can start the Left Engine without the boost pumps because it will feed off the DC boost pump which is energized by the DC bus which is itself energized once the Inverter is switched on, if I remember the schematics properly. DC Boost pump feeds off the Left fuel system so it can support the Left engine which also feeds off that system. The right system is however isolated and so the Right Engine needs a boost pump to start it. Alternatively enabling crossfeed would allow you to start the Right Engine with the Left Fuel System. Again, as I understand it, the boost pumps while not being necessary to sustain fuel flow are necessary to start the engine. IIRC the DC fuel pump is supplying both the left engine and APU with fuel. So to start engine using left AC fuel pumps is not required because there is a DC one, but there is no right DC pump so using the fuel pump switch is required to start right engine. IIRC the A-10C has also engine driven fuel pumps so running the engines without fuel pumps should be possible but its not recomended anyway, i'm not even sure that engine will not shut down if you open full throotle. DCS A-10C is only for enthertaiment??? Not for me. JDAM manual is classyfied??? Not for me. Lies sounds like a truth??? Not for me. Knowlege is for kids??? Nope, its for me. Link to comment Share on other sites More sharing options...
PFunk1606688187 Posted October 31, 2014 Share Posted October 31, 2014 IIRC the DC fuel pump is supplying both the left engine and APU with fuel. So to start engine using left AC fuel pumps is not required because there is a DC one, but there is no right DC pump so using the fuel pump switch is required to start right engine. Yes. Basically you can start the left engine with the same DC pump that is there to start the APU owing to the fact that the APU and that DC pump feed off the Left Fuel System. Since both fuel systems are isolated the Right Engine can't do this automatically. Warning: Nothing I say is automatically correct, even if I think it is. Link to comment Share on other sites More sharing options...
Dudester22 Posted November 1, 2014 Share Posted November 1, 2014 IIRC the DC fuel pump is supplying both the left engine and APU with fuel. So to start engine using left AC fuel pumps is not required because there is a DC one, but there is no right DC pump so using the fuel pump switch is required to start right engine. If that's the case why am I able to start both engines with all fuel pumps off? Why don't you try it and see for yourself. Link to comment Share on other sites More sharing options...
PFunk1606688187 Posted November 1, 2014 Share Posted November 1, 2014 If that's the case why am I able to start both engines with all fuel pumps off? Why don't you try it and see for yourself. Beats me. Anytime I forget to turn boost pumps on my right engine fails to start 100% of the time. Warning: Nothing I say is automatically correct, even if I think it is. Link to comment Share on other sites More sharing options...
mashi Posted March 5, 2019 Share Posted March 5, 2019 Right engine fails to start after repair My right engine caught fire, extinguished the fire. Limped back to base. Landed. Shut down. Had it repaired. Struggled for several minutes to start the right engine again after repair. Even requested ground crew to redo their repair. Nothing seemed to help. Decided to give up, clicked on the mission exit button. Half a second later while I am exiting I notice my fire extinguisher handle is still pulled out... Link to comment Share on other sites More sharing options...
Puma Posted March 6, 2019 Share Posted March 6, 2019 My right engine caught fire, extinguished the fire. Limped back to base. Landed. Shut down. Had it repaired. Struggled for several minutes to start the right engine again after repair. Even requested ground crew to redo their repair. Nothing seemed to help. Decided to give up, clicked on the mission exit button. Half a second later while I am exiting I notice my fire extinguisher handle is still pulled out... You mean the right engine emergency fuel shutoff? That handle serves two functions, and yup that’ll make startup difficult:) Custom Pit 476 Recruiting i9-12900KF, 32 GB DDR5, Gigabyte Aorus Z690 Master, Gigabyte RTX 2080 Ti, 1TB Sabrent Roket 4+ 2x750GB RAID-0, TrackIR 5 /w clip, CRG9 49” Curved Ultrawide Flight Display+15" Touchscreen+17" Gauges display, Thrustmaster Warthog+7.5cm, Saitek Pro Combat Pedals, Streamdeck, Butt Kicker and pneumatic G-Seat Link to comment Share on other sites More sharing options...
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