Hi Folks: I have a 2006 ultra classic that keeps throwing this code P0264 rear cylinder high efi. Engine light will come on and rear cylinder will stop firing. You can clear trouble codes and it might run fine for 80 miles or .8 miles. I can't seem to find any broken wires or loose connections,injectors ohm out at 12.5 ohms. I'm kind of at a loss for what to check next. Any one have this problem before ?