Here's a breakdown of the process:
1. Safety First:
* Disconnect the battery: This is crucial to prevent sparks that could ignite fuel. Disconnect the negative (-) terminal first.
* Ventilation: Work in a well-ventilated area away from any open flames or sparks.
* Eye protection: Wear safety glasses to protect your eyes from fuel splashes.
* Gloves: Wear gloves to protect your hands from fuel and potential cuts from sharp metal.
* Have a fire extinguisher readily available.
2. Locate the Fuel Lines:
The fuel lines are typically located near the fuel tank and the fuel injectors. You'll likely need to access them from underneath the vehicle. Consult a repair manual specific to your 2000 Blazer (year, engine size matters) for exact locations. Pictures or diagrams are invaluable.
3. Tools You'll Need:
* Wrench(es): The size will depend on the type of fuel line connections. You might need both line wrenches (to avoid damaging the lines) and open-end or box-end wrenches. Common sizes are 5/16", 3/8", and 7/16", but check your repair manual.
* Fuel line disconnect tool (optional but recommended): This tool makes disconnecting quick-connect fuel lines much easier and less prone to damage.
* Shop rags or absorbent cloths: To clean up any spilled fuel.
* Container: To catch any spilled fuel.
4. Loosen the Fuel Lines:
* Identify the type of connection: Your Blazer likely has either clamp-style or quick-connect fuel lines.
* Clamp-style: These require loosening the clamp with a wrench before you can separate the line. Be careful not to overtighten when reconnecting.
* Quick-connect: These usually involve depressing a clip or tab while pulling the lines apart. A fuel line disconnect tool can make this much easier and safer.
* Loosen slowly: Apply steady pressure when loosening the connections. Don't use excessive force, as you can easily damage the lines or fittings. Work carefully and avoid jerking the lines.
* Catch the fuel: Have a container ready to catch any fuel that may spill out.
5. After Loosening:
* Inspect the lines: Check for any cracks, kinks, or damage. Replace damaged lines immediately.
* Clean the connections: Wipe the connections clean before reconnecting them.
6. Reconnecting:
Follow the reverse steps to reconnect the fuel lines. Make sure all connections are tight and secure to prevent leaks.
Important Note: This is a general guide. The exact procedure may vary depending on the specific model and engine of your 2000 Blazer. Always consult a repair manual specific to your vehicle for detailed instructions and diagrams. If you are not comfortable performing this task yourself, take your vehicle to a qualified mechanic. Working with fuel systems is dangerous and improper handling can lead to injury or fire.
