Here's a general procedure. However, this is not a substitute for consulting a repair manual specific to your 1999 Pontiac Montana. A repair manual will show you the exact location of the fuel lines, and may have specific warnings or techniques.
1. Locate the fuel lines: These are usually near the fuel injectors or the fuel rail (on the engine) and at the fuel tank (under the vehicle). The Montana likely has lines for fuel supply, return, and possibly a vapor line. They're often color-coded (check your repair manual for specifics).
2. Prepare your tools: You'll likely need:
* Wrench or pliers: The lines might have clamps or quick-disconnect fittings. The type of tool depends on the type of connection.
* Shop rags or absorbent material: To soak up any spilled fuel.
* Safety glasses: To protect your eyes from fuel spray.
* Gloves: To protect your hands.
* Fuel line disconnect tool (optional but helpful): This specialized tool makes disconnecting some types of quick-connect fittings easier and safer.
3. Disconnect the lines:
* Identify the type of connection: Some use clamps that need to be loosened. Others use quick-disconnect fittings that often require pushing a release tab or lever while pulling the line apart. Your repair manual will tell you how your specific fuel lines connect.
* Slowly and carefully release the clamps or fittings: Avoid jerking or forcing them. Fuel may spill even with careful disconnection. Be prepared to catch it with your rags.
* Support the lines: As you disconnect a line, support it to prevent it from swinging and potentially damaging other parts.
4. After disconnecting: Immediately plug the open ends of the fuel lines to prevent fuel spillage and vapor release. You can use appropriate sized rubber caps or plugs.
5. Reconnect (when done): Reverse the steps above, ensuring the connections are secure and there are no leaks.
Important Safety Considerations:
* Work in a well-ventilated area: Gasoline fumes are hazardous.
* No smoking: Avoid any open flames or sparks near the fuel lines.
* Dispose of fuel properly: Do not pour fuel on the ground. Use a proper container.
* If you're unsure about any step, consult a qualified mechanic: Attempting to work on fuel lines without the proper knowledge and tools can be dangerous.
Remember, this is general advice. Always consult a repair manual specific to your 1999 Pontiac Montana before working on your fuel system. Improper handling of fuel lines can result in injury, fire, or damage to your vehicle.
