Technical Ducato 2020 engine turns but does not start.

[ZaphodB]

Anyone think a hand could safely be placed fully over the air inlet to feel if engine drawing any air in?(sucking a vacuum?)
Or completely over exhaust pipe to see if air is being pumped through by engine while cranking?
Maybe a balloon or similar rolled onto exhaust tail pipe too see if inflation occurs?

Maybe not the full palm, splayed fingers like ....

 

[jackwhoo]

Trying to think outside the box perhaps the balloon.....or similar over tail pipe could indicate a blocked exhaust system or exhaust camshaft not operating.
I know they are long shots.

 

[fedupcamper]

Sounds very much like an engine receiving no fuel and/or air.

Use your obd reader to monitor fuel pressure whilst cranking - what does it show static and whilst cranking.

Revisit & reset the inertia switch.

Can you hear the low pressure pump in the tank running?

Definitely definitely check the throttle valve position.

Both low and high pressure are reported as fine (4 and 560 bar respectively).
inertia switch confirmed pressed down (that's the correct position right?).
When key is in ignition, I hear the diesel pump running for about 10-15 seconds. When i completely emptied the tank, the pump sucked up a bunch of air.
When I refueled, i heard it gurgle and I kept running it on and off until it gurgled no more.

 

[fedupcamper]

Maybe not the full palm, splayed fingers like ....

sure

 

[AsdaPricey]

inertia switch confirmed pressed down (that's the correct position right?).

According to this video if activated you should feel a click as it resets - assuming it had been triggered.

 

[AsdaPricey]

Both low and high pressure are reported as fine (4 and 560 bar respectively

Ok - so now would be a good time to check:
a) if the injectors are getting a signal from the ecu. A technician with oscilloscope can check this.
b) what compression each cylinder has.

If all that is beyond equipment & capabilities, bearing in mind that you’ve started this thread on the 1st of August, surely it’s time to admit defeat (we’ve all been there!) & locate a garage/mobile mechanic that can diagnose it?

 

[fedupcamper]

According to this video if activated you should feel a click as it resets - assuming it had been triggered.

confirmed, it's not activated.

 

[fedupcamper]

Ok - so now would be a good time to check:
a) if the injectors are getting a signal from the ecu. A technician with oscilloscope can check this.
b) what compression each cylinder has.

If all that is beyond equipment & capabilities, bearing in mind that you’ve started this thread on the 1st of August, surely it’s time to admit defeat (we’ve all been there!) & locate a garage/mobile mechanic that can diagnose it?

I'm waving the white flag.

I'll follow up shortly.

 

[AsdaPricey]

I'm waving the white flag.

I'll follow up shortly.

@fedupcamper I admire your tenacity in trying to solve the issue but I think you’re doing the correct thing - and when you post the result we will have all learnt something with you.