m50b28 won't start right

[iloveshaorma]

Hey guys i just rebuilt an m50b28 with m50b20 head and when i crank the engine it starts then immediatly stalls. I have to accelerate it a bit so it won't die and then idles normaly also in 5-th gear (zf 310 and 4.10 lsd kinda 3rd gear) it runs interupted like low gas. the pump is fine it ran well on my old m20b20. Maybe fpr? I will test it tomorrow on a computer

[jink0619]

Check your fuel lines and make sure their connected correctly, check your injectors and check main relays.