1. Identify your engine: Check your vehicle's documentation (owner's manual, etc.) or the engine bay itself for the engine size (e.g., 4.3L, 5.7L, etc.).
2. Consult a repair manual: A Haynes or Chilton repair manual specific to your 1990 Chevy Blazer and engine will show you exactly where the fuel filter is located. These manuals are invaluable for this kind of task and provide diagrams.
3. Search online: A Google search such as "1990 Chevy Blazer [engine size] fuel filter location" might yield helpful images or forum posts showing its location. However, always double-check the information with a reliable source.
Important Safety Note: Working with fuel lines and the fuel system is dangerous. Fuel is flammable and potentially explosive. Always disconnect the negative battery terminal before beginning any fuel system work. If you're not comfortable performing this task yourself, take your vehicle to a qualified mechanic.
