Technical Ducato 2020 engine turns but does not start.

[fedupcamper]

If testing compression with a gauge , an open throttle will give highest reading.
When engine failed were you able to notice if and smoke from exhaust?

No, I didn't notice anything. It was dark outside and I was chocked by the engine stalling.

 

[jackwhoo]

I thought the flap operated in completely the opposite to what is commonly perceived in that it is predominantly activated to the closed position when switching off the ignition, aiding the stopping of the engine by shutting off the airflow but returning to the open position ready to start the engine again - have I got that wrong?

Very old systems did "anti shudder valves" but the "throttle valves" predominantly with a throttle portion sensor are to do with how much exhausted is rerouted to the inlet for emmision control.

 

[jackwhoo]

Get view of the throttle flap when attempting to start engine.....if flap closes fully when trying to start there is a problem with it