im running on 3 cylinders

hey well i got a b16a swap into my 86 crx and i have a dead cylinder #4 an ive checked and i got power to the fuel injector and i bought a new injector last nit to c if it was plugged but still dead and power to the coil also the pgmfi fuel lite is on in the dash and im throwing ecu code 16 im wonding wha it could be :confused:
thnx in advance

oops nvm i fixed it haha wjhne my teacher burnt throu some wires i had to re place a section of harness and there were 2 yellow ones and i got them switchd so its all good now except when i turn off key it says on