Turbo - No Fuel Flow

[plicpriest1]

@Voxen Interesting. Did you have the throttle full open and mixture full rich?

[Voxen]

Yes, both. I flew the plane multiple times and I never seen the needle moving during priming.

[Black Square]

@Voxen Send a video, if you could.

[Voxen]

I can not upload video here but I can send the iCloud link to it:
https://share.icloud.com/photos/0d6w3fBH8uKJ_2sw9iQq8YlaQ

[Black Square]

@Voxen Thanks for taking the trouble to upload that. I know you said you tapped on the glass before, but unfortunately, not in the video. The variable that drives the actual fuel into the cylinders is literally duplicated in its last step to drive the gauge, so it's very difficult for me to believe that there could be an issue between that last step and the gauge itself.

[tttocs]

I'm thinking this may be temperature related. As I noted earlier, I'd seen the fuel flow gauge begin to respond with longer priming times on the TC. However on my last few flights it has never moved. The difference is the last few flights have been from airports with extremely high (>30c) temps.

However, even with the hot temps, the engine still starts just as expected with no issues.

[Voxen]

Ok here is another, I think I didnt miss anything this time
https://share.icloud.com/photos/0cbjo-607vAVAumHSAN5Uezyw

[Zacke]

The EDM shows the fuel flow while priming. Even when the ff gauge doesn't.

[StefanL85]

I am having the same issue. No fuel flow indicated at priming and to get the needle moving on ground after startup I have to open the throttle around one quarter. Ambient Temperture is the heat in Europe and I hammered the glass like a crazy person.

[Voxen]

This video at 8:45 also demonstrates this quite clearly:
https://youtu.be/YcCze1mSZ8c?si=hfq2mLXyCGIjfd-R

[Black Square]

@Zacke said in Turbo - No Fuel Flow:

The EDM shows the fuel flow while priming

Can someone read what the fuel flow is while priming, or what the value of L:BKSQ_FuelFlow_1, GALLONS PER HOUR is?