Right i may have narrowed my starting problem down to a bad injector.

I read online about pulling off the leak of pipes and unplugging the electrics then cranking the engine.

I have just tried this and i am getting very little fuel from 2,3 and 4 it is just a little trickle but no 1 is squirting about an inch. I'm guessing this is fucked?

Could this be causing the car to struggle to start?

the only fault code i can get is p0251 (Injection pump fuel metering control a)

I know these injectors have to be coded to the ecu but i was wondering if i got another injector will the car run? I just want to test if it starts first time. Or does it need to be coded to run?

Any help/advice would be great.