1993 Buick Roadmaster



May, 22, 2010 AT 5:29 PM

Engine Mechanical problem
1993 Buick Roadmaster V8 Two Wheel Drive Automatic 175000 miles

I can't find direction on how to change the fuel pump. Can you help me with this.


1 Answer



May, 22, 2010 AT 7:22 PM

Fuel Pump/Fuel Level Sender Replacement


1.Before servicing the fuel pump the fuel system pressure must be relieved, See DIAGNOSIS AND TESTING.
2.Disconnect the negative battery cable.
3.Raise the car on a hoist.
4.Remove the fuel tank
5.Remove fuel level sender assembly attaching nuts (6), retaining flag, sender assembly and O-ring from fuel tank. Lift assembly from the fuel tank.
6.Pull the fuel pump up into the attaching hose while pulling outward away from the bottom support. Take care to prevent damage to the rubber insulator and strainer during removal. After the pump assembly is clear of the bottom support, pull the pump assembly out of the rubber connector for removal.

NOTE: Inspect the fuel pump attaching hose for any signs of deterioration. Also check the rubber sound insulator at the bottom of the pump. Replace damaged or deteriorated parts.

1.Push the fuel pump assembly into the attaching hose.
2.Position the fuel tank sending unit and pump assembly into the fuel tank. Use a new "O" ring seal. NOTE: Care should be taken not to fold over or twist the strainer when installing the sending unit as this will restrict the flow of fuel. Also, verify that the strainer does not block the full travel of the float arm.
3.Install fuel level sender assembly, retaining flags and attaching nuts (6).
4.Reinstall fuel tank.


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