HELP!! No start ALH

Mason IV

New member
May 16, 2022
South Africa
Jetta 4 AHF/ALH
Forgive me for starting a new thread but I can't get definitive answers elsewhere, I have a 02 Jetta 4 AHF (TDI with the red I) and I've just changed my engine. The new engine won't start. I've primed the IP and purged the injectors, I'm not getting any error codes and no gp light blinking. I'm new to this please help