Fuel pressure after priming but with Fuel valve closed

[-0303-]

Should we get this?

Three sequences. Bold is verbatim controls (steps omitted are deliberate):

 

1) Spawn

Accum On

Fuel valve left closed

Primary fuel Switch CARB

Pressure needle doesn't move.

 

2) Spawn

Accum On

(Fuel valve left closed)

Primary fuel Pump OPEN

Primary fuel Pump PULL --------(1x) (priming)

Primary fuel Switch CARB

Pressure needle slowly moves to 1.

 

3) Same as 2) only difference PULL 5x instead of 1x (5 priming strokes)

Pressure needle moves quicker to 1. Interesting.

 

~

So what's this? Fuel left in tubing is modeled? I tried (of course) to get the engine started with Fuel valve closed (including all the omitted steps except with Fuel valve left closed). Couldn't, as I shouldn't.

 

Kept at it for a while, noticed the pressure needle didn't drop. Maybe it should have. Maybe I didn't keep at it long enough.

 

 

~

This is not about engine not starting, it starts fine. It's about fuel system modeling.

Edited July 16, 2019 by -0303-