Good morning, whoever this reads

warm start (after 5 minutes) gives us trouble:
The engine turns but won't start when i drive for 5 minutes if i try to start immediatly after shutting it off. if i leave it for 10 minutes no problem.

Startprocedure:
turn ignition on, hear the pump running, stops after a second or 3.
try to start throttle closed it wont run. If i give full throttle eventually it will run (trottle still full open) stationairy. sometimes if i play with the throttle it will go up in rev's.

Changed the ecu, same problem.
let the injector spray on a paper cloth, nice image.
It feels like the engine does not get air, (but that is feeling)


If i disconnect the blue temperature sensor (1400 ohm at 35 degree) and than try to start it will start imediatly

any tips welcome