Replaced both fuel filters,o2 sensors,performed fuel pressure check and both banks at 42 psi. new plugs,caps and rotors. all wires ohmed out at 4k. replacrd all bad vacuum lines. cleaned DKs. cleaned all fuel injectors. EML lite is working properly. I have no check eng lite even after replacing the bulb. runs ok but idles like shit. plugs 1-2-3 are the most fuel fowled. any suggestions?