Good advice! I am having pretty much the same problem, so I will definitely try that. I let it run for about an hour and it seems alright.When I got my crew cab, it had been sitting for a while and not driven much. So it had icky gas in it when I got it! Ran great when on the throttle, but all ants in its pants on idle. I ran a few cans of B12 Berrymans chemtool through it, the first few tanks, and changed the fuel filter. That helped tremendously, and new cap, rotor and plugs helped a lot too.