Non start after coding/swapping injectors

[IrishT6]

HELP!!!!!!
I’ve a 2017 T6 I’ve had an issue with van last couple days!
Changed inlet manifold as completely caked up!!!
Didn’t really fix problem, still had slight misfire/lumpy idle
Got a second hand injector just to test no real improvement!
Swapped a couple injectors around and now van won’t start

 

[mmi]

What engine is that - what's the engine code on sticker under dash by steering column? Something like CXGA, CXGB, CXHA, etc.
Do you have a diagnostics tool to monitor fuel pressure and injector firing? E.g. VCDS.
Can you try starting having injector fuel return lines disconnected? Just connect "open" tubing to outlets to collect escaping fuel? Something similar to this:


[EDIT]
PS1. Need to clamp off the disconnected fuel return line to prevent air ingested into the system.
PS2. The steps in detail are described in engine workshop manual under section 23 - Mixture preparation - injection
wherein paragraph 3.6 & 3.7 Checking return flow rate of injectors...

T6 - 4-cylinder common rail engine CXEB CXFA CXGA CXGB CXHA CXGC CXHB

Workshop manual for the 4-cylinder common rail engine CXEB CXFA CXGA CXGB CXHA CXGC CXHB

www.t6forum.com