injector colors?

[Touchdown038]

Well, the time has come to buy some new fuel injectors to replace my old leaking ones. Problem is, anywhere I go to buy them, they ask if I need blue, orange, or black stickered ones. So how do I find out which ones I need?

[NISTECH]

if you replace all 4 at once it doesnt matter. as long as they all match.

[ricebike]

you'll see the painted dots when u remove them off from the fuel rail/intake manifold...

it didn't matter w/ the aftermarket pythons i installed 3 years ago... i'm just wondering what those painted dots mean...

[NISTECH]

they are for spray pattern. each one has a different spray pattern and can effect idle quality. the amount of fuel is the same but the pattern is different.

[fiznat]

also along the lines of injector colors, I beleive the stock ones have red caps, and 370cc ones have purple caps...