Regan Brown
Replacing the fuel pump and sending unit on a 1987 C4 Corvette is a complex process that requires careful attention to detail. Before beginning the installation of a new fuel pump, it is important to troubleshoot the Corvette's fuel system and relieve the pressure in the fuel system by disconnecting the negative battery cable and removing the gas cap for 15 minutes. Once the pressure is relieved, the fuel tank must be drained, and the tank filler door attaching screws and bezel must be removed. The next steps involve disconnecting the fuel hoses and EVAP hose from the fuel sender assembly, as well as lifting the fuel tank filler pipe housing and disconnecting the drain hose from the nipple.
| Characteristics | Values |
|---|---|
| First step | Disconnect the negative battery cable and relieve the pressure in the fuel system |
| How to relieve pressure | Remove the gas cap and let the car sit for 15 minutes |
| Next step | Drain the fuel tank and remove the tank filler door attaching screws and bezel |
| Next step | Plug or pinch the fuel feed and return hoses and remove the fuel sender electrical connector |
| Next step | Remove the fuel sender assembly attaching screws, assembly, and gasket |
| Next step | Clean the gasket sealing surfaces |
| Next step | Lift the fuel tank filler pipe housing and disconnect the drain hose from the nipple |
| Next step | Clean all fuel connections and surrounding areas |
| Next step | Disconnect the fuel hoses and EVAP hose from the fuel sender assembly |
| Next step | Position the gasket on the fuel tank with the notch facing forward in the right-hand corner of the tank |
| Next step | Carefully fold the strainer to allow it to fit through the opening in the tank |
| Next step | Install the fuel sender assembly into the fuel tank and re-connect the fuel sender electrical connector |
| Next step | Connect the EVAP hose and tighten the hose clamps |
| Next step | Re-connect the fuel drain hose to the nipple on the filler pipe housing and place the housing around the filler pipe |
| Next step | Re-install the filler door bezel, add fuel, and re-connect the negative battery cable |
| Final step | Turn the ignition switch on, off, then back on and check for any possible fuel leaks |
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What You'll Learn
- Disconnect the negative battery cable and relieve the pressure in the fuel system
- Remove the fuel sender electrical connector
- Clean all fuel connections and surrounding areas
- Position the gasket on the fuel tank with the notch facing forward in the right-hand corner of the tank
- Re-connect the negative battery cable and check for fuel leaks
Disconnect the negative battery cable and relieve the pressure in the fuel system
To disconnect the negative battery cable and relieve the pressure in the fuel system of a 1987 Corvette, first, troubleshoot your Corvette’s Fuel System to determine if it is time to install a new fuel pump and sending unit. Once you have done this, disconnect the negative battery cable. To relieve the fuel system pressure on a C4 Corvette, remove the gas cap and let the car sit for 15 minutes. Once the pressure is relieved, drain your Corvette’s fuel tank and remove the tank filler door attaching screws and bezel.
Before disconnecting the fuel tank filler pipe housing, clean all fuel connections and surrounding areas to avoid contaminating the fuel system. Next, disconnect the fuel hoses and EVAP hose from the fuel sender assembly. Plug or pinch the fuel feed and return hoses and remove the fuel sender electrical connector. To finish the removal of your C4 Corvette’s fuel pump and sending unit, remove the fuel sender assembly attaching screws, assembly, and gasket. You can re-install the old gasket but first check to see if your new C4 Corvette Sending Unit came with a new gasket. If it did, discard the old gasket and thoroughly clean the gasket sealing surfaces. If you just purchased a new C4 Corvette Fuel Pump, you will need to purchase a gasket separately or re-install the old gasket. Finally, cuts, nicks, swelling, or distortion is common on the fuel feed, fuel return and EVAP hoses so be sure to inspect these hoses before proceeding.
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Remove the fuel sender electrical connector
To remove the fuel sender electrical connector, you must first plug or pinch the fuel feed and return hoses. Once you have done this, you can remove the fuel sender electrical connector.
Before disconnecting the fuel tank filler pipe housing, be sure to clean all fuel connections and surrounding areas to avoid contaminating the fuel system. Next, disconnect the fuel hoses and EVAP hose from the fuel sender assembly.
To finish the removal of the fuel pump and sending unit, remove the fuel sender assembly attaching screws, assembly, and gasket. You can re-install the old gasket, but first, check to see if your new C4 Corvette Sending Unit came with a new gasket. If it did, discard the old gasket and thoroughly clean the gasket sealing surfaces.
If you are just purchasing a new C4 Corvette Fuel Pump, you will need to purchase a gasket separately or re-install the old gasket. Finally, cuts, nicks, swelling, or distortion is common on the fuel feed, fuel return, and EVAP hoses, so be sure to inspect these hoses before proceeding.
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$50.29
Clean all fuel connections and surrounding areas
To clean all fuel connections and surrounding areas on a 1987 Corvette, you should first disconnect the negative battery cable and relieve the pressure in the fuel system. To relieve the fuel system pressure on a C4 Corvette, simply remove the gas cap and let the car sit for 15 minutes. Once the pressure is relieved, drain your Corvette’s fuel tank and remove the tank filler door attaching screws and bezel.
Before disconnecting the fuel tank filler pipe housing, clean all fuel connections and surrounding areas to avoid contaminating the fuel system. Next, disconnect the fuel hoses and EVAP hose from the fuel sender assembly. Plug or pinch the fuel feed and return hoses and remove the fuel sender electrical connector.
To finish the removal of your C4 Corvette’s fuel pump and sending unit, remove the fuel sender assembly attaching screws, assembly, and gasket. You can re-install the old gasket but first check to see if your new C4 Corvette Sending Unit came with a new gasket. If it did, discard the old gasket and thoroughly clean the gasket sealing surfaces.
Before proceeding, inspect the fuel feed, fuel return and EVAP hoses for cuts, nicks, swelling or distortion.
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Position the gasket on the fuel tank with the notch facing forward in the right-hand corner of the tank
To replace the fuel pump on a 1987 Corvette, you must first disconnect the negative battery cable and relieve the pressure in the fuel system. You can do this by removing the gas cap and letting the car sit for 15 minutes. Once the pressure is relieved, drain the fuel tank and remove the tank filler door attaching screws and bezel.
Next, lift the fuel tank filler pipe housing and disconnect the drain hose from the nipple. Before disconnecting the fuel tank filler pipe housing, clean all fuel connections and surrounding areas to avoid contaminating the fuel system. Now, disconnect the fuel hoses and EVAP hose from the fuel sender assembly. Plug or pinch the fuel feed and return hoses and remove the fuel sender electrical connector. To finish the removal of the fuel pump, remove the fuel sender assembly attaching screws, assembly, and gasket.
Now, you can install the new fuel pump. Position the gasket on the fuel tank with the notch facing forward in the right-hand corner of the tank. Carefully fold the strainer to allow it to fit through the opening in the tank. Next, install the fuel sender assembly into the fuel tank and re-connect the fuel sender electrical connector. Then connect the EVAP hose and tighten the hose clamps. Re-connect the fuel drain hose to the nipple on the filler pipe housing and place the housing around the filler pipe. Now you can re-install the filler door bezel, add fuel, and re-connect the negative battery cable. Before driving your Corvette away, be sure to turn the ignition switch on, off, then back on and check for any possible fuel leaks.
If you just purchased a new C4 Corvette Fuel Pump, you will need to purchase a gasket separately or re-install the old gasket. If your new C4 Corvette Sending Unit came with a new gasket, discard the old gasket and thoroughly clean the gasket sealing surfaces.
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Re-connect the negative battery cable and check for fuel leaks
To finish the installation of your new fuel pump, you will need to re-connect the negative battery cable. Before driving your Corvette away, be sure to turn the ignition switch on, off, then back on and check for any possible fuel leaks.
To relieve the fuel system pressure on a C4 Corvette, you can simply remove the gas cap and let the car sit for 15 minutes. Once the pressure is relieved, drain your Corvette’s fuel tank and remove the tank filler door attaching screws and bezel.
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Frequently asked questions
First, disconnect the negative battery cable and relieve the pressure in the fuel system. To relieve the fuel system pressure on a C4 Corvette, remove the gas cap and let the car sit for 15 minutes. Once the pressure is relieved, drain your Corvette’s fuel tank and remove the tank filler door attaching screws and bezel. Plug or pinch the fuel feed and return hoses and remove the fuel sender electrical connector. To finish, remove the fuel sender assembly attaching screws, assembly, and gasket.
Position the gasket on the fuel tank with the notch facing forward in the right-hand corner of the tank. Install the fuel sender assembly into the fuel tank and re-connect the fuel sender electrical connector. Then connect the EVAP hose and tighten the hose clamps. Re-connect the fuel drain hose to the nipple on the filler pipe housing and place the housing around the filler pipe. Now you can re-install the filler door bezel, add fuel, and re-connect the negative battery cable.
Before disconnecting the fuel tank filler pipe housing, clean all fuel connections and surrounding areas to avoid contaminating the fuel system.
