Basically, it starts and drives fine. I’m trying to do a DIY but I can’t figure out what it is ? I have those CEL lights on for P0012 (camshaft over-retarded bank 1) and the P0171 (running to lean bank 1). I’ve taken some steps but it’s still an issue. I’ve replaced the MAF sensor and did an oil change. I hear some kind of tick where the belts are and somewhat of a air leak where the vacuum hoses are at. Any suggestions ?