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Old 02-22-2009, 06:47 PM
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running out of fuel

The other day I was pulling my gooseneck with about 7000lbs on it. It was about a 60 mile trip. The last 5 miles miles the truck ran like crap. I lost all power and the egt's dropped to zero. The truck would not go over 20 mph. I pulled over and it idled fine with a load knocking noise but smoothed out after about 5 minutes of ideling. I accelerated to about 30 mph and it lost power again. So I pulled over again and let it idle again. I revved the engine and had alot of white smoke coming out of the exhaust. This went on for about 1 hour. I finally got to the fire station were I work and I was going to let it stay there but it started running great again. I shut it off and let it sit for about 10 minutes. I fired it up and it ran perfect for about 2 miles. Then any time I went over 2000 rpm it stumbled, but ran good below 2000. I got home and let it sit for a day. Then my buddy came over to check it out for me. We took it out with the trailer and it ran perfect. I had it revving at 3000 rpms pulling the trailer with no hesitation. But the fuel pump seems to stay on too long. When I turn the key on the pump runs for about 15-20 seconds before turning off. My buddy said he hears it gurgling with air bubbles. I have over 1/2 tank of fuel. There is no fuel leaks anywhere. I am stumped. What would cause this to happen? I scanned for codes and found P0500, P0603, P1247, and P0720. I am thinking that there was air in the line and that caused these codes. About 2 weeks ago I ran out of fuel (even though the gauge said 1/4 tank). Would there still be air in the lines or pump causing it to starve for fuel in the upper range? What would be some common things to look for? And any common fixes would be helpful also. Thanks for any help
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Old 02-23-2009, 06:55 AM
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What would the pump do if it is ready to go out?
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Old 02-25-2009, 09:04 AM
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Has anyone even heard of this. Did it just suck air even though I had 3/4 of a tank.
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