on my way to work my truck started running rough and threw codes 174 and 303. I did a little research and decided to try changing the #3 coil pack first. When I pulloff the old coil pack the bottom of the boot was covered in oil and so was the plug. I have checked to see if the pvc is leaking but doesnt appear to be, and I couldnt find much else about this searching this forumn. There was some oil pooled up at the bottom of the intake runner right behind the #3 plug. Anyone have any ideas where this oil is leaking from? My truck is an 02 with the 4.6.

 

Oil leaking past the plug? Is the plug tight? Did someone try to top up the oil and spill it on #3?

 

I'm thinking the valve cover gasket blew out right at the #3