1. Electrical Issues:
* Incorrect wiring: The most likely culprit! Double and triple-check that all the wires connected to the ignition barrel are securely fastened to the correct terminals. A single wire in the wrong place can disrupt the ignition system.
* Damaged wiring: Look closely at the wiring for any signs of fraying, breaks, or corrosion. If you find damage, repair or replace the affected wires.
* Faulty ignition switch: Even if you installed the new barrel correctly, the internal switch inside the barrel itself could be defective.
* Immobilizer problem: Some Peugeot 107s have immobilizers that prevent the car from starting if they don't recognize the key. You might need to reprogram the key to the new barrel.
2. Fuel System:
* No fuel reaching the engine: Check for fuel in the fuel lines. If the fuel pump is not working, the engine won't get any fuel.
* Blocked fuel filter: A clogged fuel filter can restrict fuel flow.
3. Other Possibilities:
* Spark plug issues: Faulty spark plugs or wires can prevent a spark from igniting the fuel-air mixture.
* Low battery: A weak battery can still turn the starter, but not provide enough power for the ignition system.
* Loose or disconnected battery terminal: Make sure the battery cables are securely connected.
Troubleshooting Steps:
1. Check the wiring: Begin by meticulously verifying the wiring connections to the ignition barrel. Use a wiring diagram (available online) to ensure everything is in the correct place.
2. Inspect for damage: Look for any damaged wires, especially near the ignition barrel.
3. Verify fuel flow: Check if fuel is reaching the engine by inspecting the fuel lines.
4. Check the spark plugs: Remove the spark plugs and visually inspect them for damage or fouling.
5. Test the battery: Use a multimeter to test the battery's voltage and ensure it's within the recommended range.
6. Immobilizer reprogramming: If you suspect an immobilizer issue, refer to your owner's manual or consult a qualified mechanic for reprogramming instructions.
Important Notes:
* Safety First: Disconnect the battery before working on any electrical components.
* Professional Help: If you are unsure about any of these steps or encounter further issues, it's best to seek assistance from a qualified mechanic.
Let me know if you have any specific symptoms or details about your situation, and I'll try to provide more tailored advice.
