Carby Issue :/

[x744]

Hey guys, im no expert when it comes to cars and after taking off the valve cover to give it some paint, i put everything back together and for some reason, when i turn the car on the revs just go straight down and then the engine turns off ? im quite confused as to whats happening and the engine im running is a 4A-C in a AE71

few pics of what my engine bay looks like






thanks heaps in advanced

[nichy]

Did you have to undo any plugs to take the cover off? Or vac lines? Does it run if you give it throttle?

[x744]

i had to take the whole carby thing off, the black casing thing, nothing else, and yeah if i accelerate it runs, but when i let go, it slowly decreases and stalls