Tools You'll Need:
* Repair Manual: Absolutely essential! This will give you specific torque specs, diagrams, and the correct procedure.
* Socket Set: Various sizes, including metric.
* Wrench Set: Again, metric.
* Fuel Line Disconnect Tool: To safely disconnect fuel lines without spraying fuel everywhere. These tools are inexpensive and worth the investment.
* Shop Rags: Plenty of them to clean up fuel spills.
* Safety Glasses: Protect your eyes from fuel spray.
* Gloves: Protect your hands from fuel and grease.
* Torque Wrench: Crucial for tightening the injector and other components to the correct specification.
* Fuel Injector Removal Tool (Optional but Highly Recommended): This tool helps prevent damage to the injector o-rings during removal. Often, they're a specialized type of grabber.
* New Fuel Injector(s): Make sure you get the correct replacement injector(s) for your engine.
* New O-rings: Always replace these when installing a new injector. They create the necessary seal.
Procedure (General Outline – Refer to your repair manual!):
1. Safety First: Disconnect the negative battery terminal to prevent accidental shorts.
2. Fuel Pressure Relief: You MUST relieve fuel pressure in the system before disconnecting fuel lines. This is typically done by briefly cranking the engine (with the ignition switch) until the fuel pump stops running, or by using a specific pressure relief valve (if equipped). Consult your manual for the precise method.
3. Disconnect Fuel Lines: Carefully disconnect the fuel lines from the injector using your fuel line disconnect tool. Have rags ready to soak up any spilled fuel.
4. Disconnect Electrical Connector: Unplug the electrical connector from the fuel injector.
5. Remove Injector: This is where the removal tool (if you have one) comes in handy. It helps grip the injector without damaging the o-rings. If you don't have one, carefully work the injector out of its bore, being mindful not to damage the o-rings.
6. Clean the Injector Bore: Inspect the injector bore for any debris. Clean it thoroughly with a clean rag and suitable cleaner.
7. Install New O-rings: Carefully install the new o-rings on the new fuel injector.
8. Install New Injector: Carefully insert the new injector into its bore, making sure it's seated properly.
9. Reconnect Electrical Connector: Plug the electrical connector back onto the new injector.
10. Reconnect Fuel Lines: Reconnect the fuel lines, ensuring they're securely attached.
11. Reconnect Battery: Reconnect the negative battery terminal.
12. Check for Leaks: Carefully check all fuel connections for leaks. Start the engine and inspect for any leaks. Listen for any unusual noises.
13. Verify Operation: After a brief test run, verify that the engine is running smoothly.
Important Considerations:
* Fuel System Pressure: The fuel system in a 2.8L Fiero operates under considerable pressure. Failing to relieve this pressure before disconnecting fuel lines can result in a dangerous fuel spray.
* O-Rings: These are crucial for sealing the injector. Always replace them with new ones. Using old or damaged o-rings will likely cause leaks.
* Torque Specifications: Over-tightening or under-tightening the fuel injector can damage the engine. Use a torque wrench and follow the specifications in your repair manual.
* Professional Help: If you're not comfortable performing this repair yourself, it's best to take your Fiero to a qualified mechanic.
This is a simplified overview. A detailed repair manual is absolutely essential for safely and correctly performing this repair. Improperly installing a fuel injector can lead to serious engine damage or even a fire. Proceed with caution and consult a professional if you are unsure about any step.
