Currently getting P050D, P219B, and P0306. I've changed the plugs wires, swapped coils. problem is still insolated to # 6, I'm swapping out new injectors. but the injectors didn't have the "blue seal" on the . granted the seal kit i got, the oem one are white.. Are they needed? I'm guessing these are the original factory installed injectors. And all so the fuel rail was bent during removal, has anyone reused them and straightened them out ?