90spec xr3i cabby wont start
 

got an efi mk4 cabby which the other day just refused to start, i have changed everything i can think of and the damn thing just will not start.
it cranks over absolutely fine, so i checked to see if had spark and which it does, then i checked to see if it had fuel to the rail which it does and discovered that if i have feed to rail cracked off it does try to fire up.
so i put on a new3 pressure reg and still nothing
got a new pink relay and map sensor gonna try an ecu when it arrives but can anyone please think of anything else it might be??????
pullin my hair out :angry: