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Old 08-30-2024, 10:03 AM   #8
RLC
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Join Date: Jan 2016
Location: Kings Mountain, NC
Posts: 13
Re: Fuel Pump Not Priming

If your problem returns it might be your fuel pump. I had this same issue on my 2001 Silverado 5.3. It would not start after the vehicle set for over a couple hours. I would cycle the switch on/off three or four times and it would start fine. I am not sure of the exact pressure, but the fuel system should retain some pressure when it sets. I checked my fuel pressure after the truck set for a few hours and it would drop down to nothing. It was the fuel pump; replaced it and no more issues.
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