DD15 wont fire after fuel filters changed.

Firstly, i have changed fuel filters on this truck before and am well aware of the issues you have with priming them, but this one has me beat

Changed fuel filters on a 2017 DD15 with the 2 fuel filter set up plus the water seperator. Primed the system as I always do with the primer, pumped it a good 1000 times. But man this thing wont fire.

After turning it over I checked the main fuel filter and its pretty much empty.

Spoke to my mechanic who gave his air pressure fuel primer, a little home made portable thing, it made no difference.

It will fire on brake cleaner for 2 secs before stopping.

I opened the second small filter and primed it with the cap off, but full of diesel until the air bubbles stoped coming through, then some more pumping.

It doesnt even try and fire, nothing close except for using brake cleaner.

Am I at the point of towing it to a shop?

Any other things I should be trying?

 

Pulled them all off and checked them, cant see anything wrong with them. No bubbles in the water seperator when cranking.

Two things I noticed, after cranking sometimes the hand primer is doing nothing like its got no fuel on either side so its just pumping air, when I fill up the filters though it pumps fuel.

2nd on is, the level on the water seperator doesnt change when cranking, I thought it usually goes down when crankong whilst its full, but maybe I am wrong on that.

 

When I watch videos of it, everyone talks about the fuel primer getting stiff, or when using the pressure systems that they stay pressurized, my hand primer never gets stiff (even before when I primed successfully) and when I put pressurized fuel into the port it just takes all of the diesel (about 3litres) and it just seems to pump it through

Am i missong something?

 

No one has ever told me I needed to do this on a DD15, where is the best place for this? I did yse to do this on my iveco, but i havent seen it done on a dd15?

 

A good 10sec, whats the maximum I can go?