Saturday, February 1, 2014
How to Change the Fuel Pump in a 1991 Z28 Camaro
The Chevrolet Camaro is a muscle car that has been in continuous production since 1967. The 1991 Z28 Camaro is a third-generation Camaro, which Chevrolet made from 1982 to 1992. This was the first generation of Camaros to come equipped with fuel injection. The 1991 Z28 Camaro used multi-port fuel injection, which requires a high-pressure fuel pump. The replacement fuel pump for this car must match the engine, which may be an eight-cylinder 5.0-liter engine or an eight-cylinder 5.7-liter engine.
Instructions
- 1
Disconnect the cable for the negative terminal on the battery, using a socket wrench. Loosen the filler cap on the fuel tank to relieve the pressure in the fuel tank.
2Place a siphon hose into the filler neck of the fuel tank. Siphon as much fuel as possible into a container approved for gasoline. Raise the vehicle on jack stands. Remove the neck shield for the fuel filler, and remove the rear axle. Disconnect the bolts for the exhaust pipes with a socket wrench, and remove the exhaust pipes from the exhaust manifold. Disconnect the heat shield for the exhaust system with a socket wrench. Clean the pipes and hoses for the fuel system around the fuel tank with a shop rag. Locate the fuel sender assembly on the fuel tank. The main body of this unit is inside the fuel tank, while its hose and electrical connectors are accessible from the top of the fuel tank. Disconnect the hoses to the fuel sender assembly, and detach the electrical connection for the fuel sender. Support the fuel tank, and remove the bolts for the fuel tank straps. Remove the fuel tank straps and fuel tank from the vehicle.
3Clean the area around the fuel sender assembly with a shop rag. Turn the retaining cam on the fuel sending unit counter-clockwise with tool J-24187, and remove the retaining cam. Remove the fuel sending unit from the fuel tank, and discard the O-rings. Detach the fuel pump from the fuel sending unit.
4Attach the new fuel pump to the fuel sending unit. Place a new O-ring in the groove on the fuel tank, and place another new O-ring on the feed tube of the fuel sender unit. Ensure that the strainer on the fuel pump is horizontal and does not impede the movement of the float arm on the fuel sender unit. Fold the strainer caully to avoid damage as you place the fuel sending unit into position on the fuel tank.
5Fasten the retaining cam onto the fuel sender unit by turning it clockwise with tool J-24187. Connect the heat shield and exhaust pipes for the exhaust system. Connect the fuel tank and lower the vehicle. Fill the fuel tank and fasten the filler cap on the fuel tank. Connect the cable for the negative terminal on the battery with a socket wrench.
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