I don't understand what the problem is. It continues to do it and my truck doesn't have any power problems. I tried to sea foam it and no luck, it still has a very rough idle. It'll idle fine for a few minutes but then it kinda bogs down.
The check engine light is on in my truck. When I got it checked it said EVAP PLUG FAULT. My truck tends to drop down to a rough 500 rpm idle when I pull up to a stop sign or just sit and idle sometimes. It only does it sometimes and I am confused as to what it could be. My truck runs fine all...