Sounds like an air leak to me. Start truck, truck idles good, then starts pulling air. I just went through this. Let us know what you find. It is common for the lines on top of the fuel tank to rot out.
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Starts fine, then dies while idling
Truck started doing this a few weeks ago. It happens occasionally. I start the truck, let it idle for a few seconds, put it in gear and while coasting, (no pressure on the pedal) the truck will sputter and die. Sometimes it fires right back up and is fine, other times it takes a little throttle work to get it started. What do you guys think it is? It happens in the morning after the truck has set for awhile. I would say it occurs about 1 out of 4 mornings that it is started. Fuel filter has about 6k miles on it.
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