1990 Fuel Injectors and Color Markings KA24E

[WhiteKnight]

I just left a Gold Shield shop where the guy told me I must know the Production month of my engine to get the correct injectors.· 1990 240SX (Production Range Fr:01-00-89 To:02-00-89)· 1990 240SX (Production Range To:06-30-90)And there is another Range from 7-1-90 to some other date.

And he said that Cylinders #1 & #4 take different injectors than #2 & #3. He said that the engine must have the exact injectors because of their calibration.Some have orange marks, and others have different colors.

Why does this matter? Is it just for NOx?

[WhiteKnight]

BAR said it isn't relevant on a 19year old engine. They never heard of matching injectors to the engine production month.

[Klits562]

BAR said it isn't relevant on a 19year old engine. They never heard of matching injectors to the engine production month.

never heard of it eitheri do know that 1 and 4 are in fact different than 2 and 3 thoughsounds like your having a hella of a time with smogging your car

[WhiteKnight]

If they would have changed the CAT I would have passed.....but the smog tech insisted on calibrating the injectors which did nothing. And complaining about not enough backpressure to work the EGR properly.