Turbo - No Fuel Flow

[Black Square]

@Woolies Did you check the tablet to see if there was any fuel actually getting to the cylinders? Did you check the fuel pressure gauge behind the throttles, or just the fuel flow?

[Woolies]

I will re test the above and report back shortly. Many thanks

[Ratman]

Hi, the same thing happens with mine. In the naturally aspirated version, you can see the fuel flow increasing during prime, but in the turbocharged version, this doesn't happen. There's an increase in fuel pressure in the line, prime happens, and the engine starts; you just can't see the fuel flow increasing during prime. I'm using MSFS 2020.

[Woolies]

Ok. Yes. Just tested again. No fuel flow showing during prime but tablet showing flow to engine and I managed to get the aircraft started.

However the FF gauge doesn’t come alive until I go above about 1600-1700 rpm, until then it is in resting place below zero.

MSFS2024 btw

[Woolies]

Another thing I noticed, on both variants, is looking at the tablet engine display the R Mag greys out when staring the engine and then goes orange again when started?

[Black Square]

@Ratman I'll check on this later. The code is identical between the two airplanes, so I'm not sure what could be going on. Rest assured, I'll find it, though.

@Woolies This is the correct behavior. Only one magneto is equipped with an impulse coupling, which retards the spark timing for start.

[Woolies]

Cool. Many thanks for the prompt responses

[Black Square]

@Woolies Deploying the flight simulation software emergency response team now

[Woolies]

I tried to call the number but got no response ??

[tttocs]

I think if you keep priming you'll notice the FF start to register in the turbo. I find I need more like 5-6 seconds of prime rather than 2-3. Starts great every time after that for me.