Fuel and Idle Problem Need help fast Please

[Matucks]

heres what happen i have a crappy KA engine i decide to put a walboro fuel pump in my stock engine and i changed all 4 fuel injectors with stock new ones because i had a miss in the engine... now the car gives off a ton of blue smoke its all gas smell its just gas no water or oil just gas smoke. the car gives a hard time to start it will run for about a few min then idle down and cut off i tried all that fuel cleaner crap nothing works im confused. the injectors are new the spark plugs are new the pump is good and the filter is new what can the problem be