Hey all, have a 2003 X with V10, has 97000 miles and original spark plugs. Had not driven her for a week or so and started running rough from the time I started up. Have been given codes p0305, p0306, and p0316 from my scan gauge all three misfire codes. Plugs and COPS need changed out, but thought it odd that I'd get 2 diffrent cylinders at the same time. Wondering if I should be looking at something else besides the plugs and COPS. Any help would be great and thanks ahead of time.

 

Change the plugs with Motorcraft replacements (Autolites work too) and change the COP boots. Clear the codes and see if you still get a misfire.

 

Thanks for the reply, thats the direction I was going to head,