Fuel Starvation

[Sluggish Controls]

Howdy All, 

Been away from DCS WWII for quite some time -- flying a GA sim instead -- and decided to jump back into my Spit and fly once again Reflected's Beware Beware and The Big Show campaigns.

Although I considered myself a decent Spit driver in the past, I am far from flawless, and I keep running into a bit of an issue I do not recall having previously... In a nutshell, my Spit is climbing across the Channel, feeding on her drop tank, and at around 15,000 feet alt the engine starts sputtering, quickly followed by loss of power. 

First couple of times I thought my drop tank was dry but that's not it ! Upon switching to my main tank the engine will pick up but for a little while only. By the time I reach the French Coast, there she goes again, coughing and losing power  Prior to that all gauges give solid reads -- temp, pressure, boost, rpm all good before the sputtering hits.

My only solution is to turn the fuel pump On under the elevator trim wheel -- it seems to work, but I do not recall having to do that particular procedure in the past.  

Has the Spit been updated fuel system-wise, or have I simply gone silly, and the fuel pump should always been turned On at Alt? And if so, when should it be turned back Off?

Cheers,

Slug

Edited November 18, 2024 by Sluggish Controls
keyboard malfunction

[Screamadelica]

Fuel pump should be turned on at all times during flight as per the pilots notes. It's been correct from the start, no changes.

Pump should also be turned off whilst taxiing and engine warm up, unless you use it to pressurise the fuel lines instead of the wobble pump on start up.

Edited November 18, 2024 by Screamadelica

[Sluggish Controls]

Thx for the prompt reply Screamadelica !

Guilty as charged. I did not read the pilots notes this time around, relying on muscle memory instead. Lesson learnt, ha!

Slug

[jackill]

+1 to what Screamadelica wrote.

I am switching on pump shortly during startup to pressurise the system, then switching off for a startup, warm up and taxi. After the start I'm switching it on permanently (+ pitot tube heater).

Also when main tanks are getting empty on high altitude, it could be needed to pressurise them via this valve:

null

 

Edited November 18, 2024 by jackill