Last week I was messing around with cleaning up the car and decided to remove the flex lines coming off the back of the valve covers. They were almost completely plugged with emulsified oil so I cleaned them all out and put them back on, sounds like a good thing to do right! Wrong Now I have OBD2 codes spilling all over the floorboards; P0150, 1106, 0302, 0305, 0300, 0171 and 0174 The car is idling a little rough, but overall not too bad. Any suggestions as to where to start would be helpful. Thanks in advance