p0174 only

[golfballs]

Over the past months i have been dealin with codes 0171 and 0174. I have changed the plugs, wires, cap and rotor. I have also found a vacuum line for the ac that was disconected and reconected it. Now i only get the 0174 code only , no more 0171. i have sprayed down the intake with starting fluid to see if i can find a leak and nothing is found. Does anyone know what i can do since the lean running is only in bank 2 (0174) ?

[ryank1]

Check your O2 sensors on that side, also with tech 2 perform an injector balance test. A single faulty injector can also cause this code.

[justodd]

you might try some GM top engine cleaner, or some BG 44K. Both of these products are excellent for cleaning injectors.