P0301 on my 06' 4.7
I first had P0300 and P301. So I changed all the plugs since I bought it used (just hit 100k mi). After I was done and started her up no CEL. So I was happy with that. I went and filled up the tank about a half mile down, cel went back on. This time only P0301. Any suggestions for my next move? I definitely feel less power on the xpressway.