Here's a breakdown of how to check:
1. Check the Fuel Pump:
* Listen for the pump: Turn the ignition key to the "ON" position (don't start the engine). You should hear a brief humming sound from the fuel pump in the fuel tank. This usually lasts for a few seconds. If you don't hear it, the pump might be faulty or not getting power.
* Check the fuel pump relay: Locate the fuel pump relay (consult your owner's manual for its location). Swap it with a known good relay of the same amperage (you can usually find a spare relay in the fuse box labeled as "spare"). If the pump now works, the original relay was bad.
* Check the fuel pump fuse: Similarly, check the fuel pump fuse in the fuse box. Replace it if it's blown.
* Check fuel pressure (advanced): This requires a fuel pressure gauge and the appropriate fitting to connect to the fuel rail. You'll need to consult a repair manual for the specific location and pressure specifications for your Tempo's engine. This is the most definitive way to know if the pump is delivering sufficient fuel.
2. Check the Fuel Filter:
* Locate the fuel filter: Consult your owner's manual for its location.
* Inspect for damage: Look for cracks, leaks, or significant rust. A clogged filter can restrict fuel flow. If you suspect a clog, replace the filter.
3. Check the Fuel Lines and Injectors:
* Inspect fuel lines: Visually check the fuel lines for cracks, leaks, or kinks between the fuel tank, pump, filter and the fuel rail.
* Check for fuel at the fuel rail (advanced and potentially messy): Carefully disconnect the fuel line at the fuel rail (after relieving pressure - consult a repair manual). Turn the ignition to the "ON" position. If fuel doesn't flow freely, there's a blockage further upstream. Be extremely careful; fuel is flammable. This is best left to someone experienced.
* Check fuel injectors (advanced): This usually requires specialized tools and knowledge. Testing involves checking for proper injector operation, often with a noid light or a fuel pressure gauge. A faulty injector won't spray fuel into the combustion chamber.
4. Check for Codes (Advanced):
* Many Ford Tempos have an OBD-I or OBD-II diagnostic port. You can use a code reader to check for diagnostic trouble codes (DTCs) related to the fuel system. These codes can pinpoint the problem area.
Important Considerations:
* Year and Engine: The exact location of components and diagnostic procedures will vary slightly depending on the year and engine of your Ford Tempo. Consult a repair manual specific to your vehicle.
* Safety: Always work in a well-ventilated area. Gasoline is flammable and its fumes are hazardous. Wear safety glasses.
If you're not comfortable performing these checks yourself, it's best to take your Ford Tempo to a qualified mechanic. They have the tools and expertise to diagnose and repair fuel delivery problems safely and efficiently.
