I have a 2006 accord and am having a problem I can't figure out. There is a noticable miss in the engine and it has lost power. At first I was getting an intake leak code, I replaced all intake gaskets and stopped getting the intake code, but the miss is still there, The car also stalls several times in the mornings until it is completely warmed up. I am now getting a system too rich code bank 1, and a misfire code in cylinder 6, I replaced the coil in cylinder 6 and the problem is still there. Any suggestions before I take it to the dealer.