Here's a general outline. Consult a repair manual specific to your 1987 Chevy S10 Blazer for precise instructions and diagrams. These instructions are for guidance only and may not be perfectly accurate for your specific model and engine.
Tools You'll Likely Need:
* Socket set (metric): Various sizes, including those for the fuel lines.
* Wrench set (metric): For various fasteners.
* Fuel line disconnect tools: These make disconnecting fuel lines much easier and safer.
* Jack and jack stands: Essential for safe working conditions.
* Wheel chocks: For added safety.
* Shop rags: To clean up spills.
* New fuel pump: Make sure you get the correct one for your engine.
* New fuel filter (recommended): Replace this while you're at it.
* Safety glasses and gloves: Protect yourself from fuel and sharp objects.
* Fuel pump pliers (optional but recommended): Makes removing the retaining ring much easier.
Steps (General Outline - Refer to your repair manual for specifics):
1. Safety First: Disconnect the negative battery terminal.
2. Vehicle Preparation: Raise the rear of the vehicle securely using a jack and jack stands. Place wheel chocks on the front wheels.
3. Access the Fuel Pump: The fuel pump is typically located inside the fuel tank. You'll likely need to:
* Lower the fuel tank: This usually involves disconnecting the fuel lines, electrical connector, and tank straps. This is often the most challenging part. Some models may have access panels for easier access.
* Consult your repair manual: The location and method for lowering the tank will be specific to your model.
4. Disconnect Fuel Lines: Carefully disconnect the fuel lines. Use fuel line disconnect tools to prevent damage and spills. Have rags ready to absorb any spilled fuel. Some models might require you to relieve pressure in the fuel system before disconnecting the lines. Consult your manual.
5. Disconnect Electrical Connector: Disconnect the fuel pump's electrical connector.
6. Remove the Fuel Pump: Once the tank is lowered (or the access panel is open), you'll need to remove the fuel pump assembly. This may involve:
* Removing a retaining ring: Fuel pump pliers are highly recommended here.
* Unbolting the pump assembly: This varies depending on the vehicle.
7. Install the New Fuel Pump: Install the new fuel pump assembly, ensuring everything is properly seated. Reverse the removal process.
8. Reconnect Everything: Reconnect the electrical connector, fuel lines, and tank straps. Double-check everything before lowering the tank.
9. Lower the Fuel Tank (if applicable): Carefully lower the fuel tank back into its position.
10. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
11. Reconnect the Battery: Reconnect the negative battery terminal.
12. Test the System: Start the engine and check for leaks. Listen for the fuel pump to prime. Inspect the fuel lines for leaks. If everything works, you're done!
Important Considerations:
* Fuel Pressure: Some models require you to relieve fuel pressure before disconnecting the lines. Consult your repair manual.
* Tank Seal: Inspect the tank's seal and replace if necessary to prevent leaks.
* Fuel System Cleaning: Consider cleaning the fuel tank and the fuel filter if the old pump was causing issues.
* Professional Help: If you're not comfortable with this repair, it's best to take your vehicle to a qualified mechanic. This is a potentially hazardous job if not done properly.
This is a simplified overview. Always refer to a repair manual specific to your 1987 Chevy S10 Blazer for detailed instructions, diagrams, and torque specifications. Failing to follow the correct procedure can lead to damage to your vehicle or injury to yourself. Remember safety first!
