2006 ford f 150 67000 mile. The plugs cops fuel filter new driver side cat were done less than 5000 miles ago. Friday it started idling rough just a little not to bad. Then it got worse Friday night. The whole thing shakes violently. I got a p0301 I changed the plug new injector and check the coil. The light hasn't come back on yet. I noticed when I filled it up Friday The gauge did not go all the way to full it went to a little above 3/4 then after ten miles it went to full

When I get it above 2700 rpm it evens out and runs and revs fine.

Also replaced the cops with cops recommended by member 88 racing eBay cops

mine just starting idling rough as hell as well but has thrown a P0012 code, VCT solenoid. I can reset the CEL and it goes off for a little while but always comes back. Stays off anywhere from minutes to days.

Swap the coil to cylinder number 2.....if the misfire follows then its a bad coil.....and let me just say these coils weather from eBay or Ford are not 100% perfect....that's why I and others suggest if going the ebay route to get a set for a v10 then you'll have a couple of extras for spares...