Edmunds Answers

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  • 1986blazer 03/05/08 11:56 pm PST

    you sould have 1 water seperator and 1 fuel filter, if you want to check the pump you could unbolt the bed and chock it up

  • gmctech 11/02/09 10:16 pm PST

    You don't have a pump in the tank. Fuel system is under vacuum during engine operation. There is no fuel pump from the tank to filter. Your injection pump, mounted under the intake manifold, sucks fuel up from the tank. Double check your fuel filter o-rings. The top ring is easy to slip off to the side causing a vacuum leak and a no start. Make sure you pump the primer and bleed all the air from the system using the bleeder on top of the fuel filter housing, with a flat bladed screw driver. Your 1996 6.5 diesel was a different animal.

  • gmctech 11/02/09 10:17 pm PST

    You don't have a pump in the tank. Fuel system is under vacuum during engine operation. There is no fuel pump from the tank to filter. Your injection pump, mounted under the intake manifold, sucks fuel up from the tank. Double check your fuel filter o-rings. The top ring is easy to slip off to the side causing a vacuum leak and a no start. Make sure you pump the primer and bleed all the air from the system using the bleeder on top of the fuel filter housing, with a flat bladed screw driver. Filter and water seperator are one unit.Your 1996 6.5 diesel was a different animal.

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