- Use a multimeter to check the voltage at the ignition switch connector. There should be 12 volts when the key is turned to the "On" position.
- If there's no voltage, the ignition switch may be faulty and will need to be replaced.
2. Check the battery:
- Check the battery voltage with a multimeter. A fully charged battery should read around 12.6 volts.
- If the voltage is low, charge or replace the battery. A weak battery can cause a lack of spark.
3. Check the starter solenoid:
- Locate the starter solenoid on the starter motor.
- Use a multimeter to check the voltage at the solenoid connector. There should be 12 volts when the key is turned to the "Start" position.
- If there's no voltage, the starter solenoid may be faulty and will need to be replaced.
4. Check the ignition wires:
- Check the ignition wires for any signs of damage, such as cracks or breaks.
- Replace damaged wires.
- Make sure the wires are connected to the correct terminals on the coil and distributor.
5. Check the fuel pump:
- Listen for the fuel pump to run when the key is turned to the "On" position.
- If the fuel pump doesn't run, it may be faulty and will need to be replaced.
6. Check the fuel pressure:
- Use a fuel pressure gauge to check the fuel pressure.
- The fuel pressure should be within the specifications provided in your vehicle's manual.
- If the fuel pressure is too low, the fuel pump or fuel pressure regulator may be faulty.
