TED Posted April 15 Posted April 15 I'm doing beware beware campaign and in sortie 5 at 28000' I've gone over to the main tank, the fuel pu.p/pressure switch on the lower left is on, the fuel pressure warning light has come on so I've switched the pressure lever on the right to on and a few minutes later, in almost exactly the same point, twice the engine just stopped. No warning, just stops. I can't for the life of me work out why. All the temperatures and pressure appear normal. Anyone have any ideas what I'm missing here?
razo+r Posted April 15 Posted April 15 How does the engine stop? Instant seizure (indicating catastrophic failure, likely due to engine mismanagement) or sputtering (indicating fuel issues 99% of the time in DCS the electric fuel pump on the lower left is not turned on). Otherwise feel free to attach a short track.
TED Posted April 15 Author Posted April 15 (edited) I re-did the sortie and tried to pay closer attention and it seems to be the rad temp that gets too cold when up high. I alternated between having the radiator flap in on and off (auto) and manages to keep the engine running on the third attempt. Edited April 15 by TED
razo+r Posted April 15 Posted April 15 1 hour ago, TED said: I re-did the sortie and tried to pay closer attention and it seems to be the rad temp that gets too cold when up high. I alternated between having the radiator flap in on and off (auto) and manages to keep the engine running on the third attempt. Ideally you leave them in auto mode. They open themself when they have to.
TED Posted April 16 Author Posted April 16 (edited) 18 hours ago, razo+r said: Ideally you leave them in auto mode. They open themself when they have to. Yes. That s what i had read and was doing but for some reason above about 28000' the coolant temp was still getting too low. The engine would just then seize with now warning. The prop just stops and a was never able to do a restart on the long way down. Edited April 16 by TED
razo+r Posted April 16 Posted April 16 What is your power setting and speed when you are climbing and getting cold temperatures? Can you perhaps replicate it and upload a short track? And when the engine instantly seizes, generally there is no way to restart it as it is an indication of a catastrophi failure / engine damage.
grafspee Posted April 20 Posted April 20 As long engine does not get colder then 70C and oil temp not lower then 40C engine should be fine. 1 System specs: I7 14700KF, Gigabyte Z790 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor
Envee Posted Wednesday at 05:19 AM Posted Wednesday at 05:19 AM On 4/20/2025 at 9:43 AM, grafspee said: As long engine does not get colder then 70C and oil temp not lower then 40C engine should be fine. I will look at engine temps more closely at high alts cos this is happening to me too. This initially happened to me when switching from drop tank, which was empty, to main tanks. The engine would just stop more or less and i would have to wait a bit, while pumping the hand pump, to get the fuel pressure back up. The engine would then start back up. The three times ive been up on the The Big Show campaign this happened to me. All three times when changing tanks and then also later on during the flight. All well above 25k. All of a sudden the fuel pressure light would come on despite the switch being set to pressurize the tank and the only thing that makes the light go off and get the engine running again is using the hand pump till the light goes off.
razo+r Posted Wednesday at 07:03 AM Posted Wednesday at 07:03 AM Did you make sure to turn on the electric fuel pump below the elevator trim wheel?
Envee Posted 21 hours ago Posted 21 hours ago On 10/15/2025 at 8:03 AM, razo+r said: Did you make sure to turn on the electric fuel pump below the elevator trim wheel? Indeed it was not turned on. Imagine that. Fly all the way to france with no fuel pressure on. I suppose the pumps on the wobble pump at the start was enough to for the external which i was using. Thank you. Bagged two huns this time. I started on the mustang so this spit is pure joy to fly.
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