Complete Citroen/Peugeot Injector Replacement and Programming Tutorial 🤔👍 

Failing injectors can exhibit various symptoms, even if your check engine light hasn't come on. Here are some common signs to look out for: 1. **Engine Misfire or Rough Idle**: If the injectors are not delivering the correct amount of fuel, the engine might misfire or idle roughly. 2. **Poor Fuel Economy**: Faulty injectors can cause the engine to use more fuel than usual. 3. **Engine Performance Issues**: You might notice a lack of power, acceleration issues, or hesitation during acceleration. 4. **Fuel Odor**: Leaking injectors can cause a noticeable fuel smell around the vehicle. 5. **Smoke from the Exhaust**: If an injector is stuck open or leaking, it can cause white or gray smoke from the exhaust. 6. **Increased Emissions**: Faulty injectors can cause the engine to run rich (too much fuel) or lean (not enough fuel), leading to increased emissions. 7. **Engine Knocking or Pinging**: This can be caused by improper fuel delivery. 8. **Hard Starting**: Difficulty starting the engine can be a sign of injector problems. To perform preventive maintenance on your injectors, you can take the following steps: 1. **Use Fuel Additives**: Periodically using a fuel injector cleaner can help keep the injectors clean and functioning properly. 2. **Check Fuel Quality**: Make sure to use high-quality fuel to prevent clogging and buildup. 3. **Regular Maintenance**: Follow the manufacturer's recommended maintenance schedule for your vehicle, which includes regular checks and services. 4. **Visual Inspection**: While it is more invasive, checking for external leaks or damage around the injectors can be helpful. This usually requires disassembly. 5. **Professional Diagnostic**: Consider having a professional mechanic perform a diagnostic check. They can use specialized equipment to test the injectors' performance and identify any issues. If you suspect an issue but don't have a check engine light, it's a good idea to have the injectors tested by a professional. They can use tools like an oscilloscope or fuel pressure gauge to measure injector performance without needing to disassemble anything initially. This can provide a clear indication of whether there's a problem with the injectors or another part of the fuel system.

The codes you're seeing after replacing the injector on your customer’s car could be linked to a few possible issues. Here's a breakdown of both codes: ### 1. **P12A7 - Injector Cylinder 3 Amount Excessive** This code suggests that the fuel injector in cylinder 3 is injecting more fuel than expected. Since you just replaced this injector, a few things could cause this: - **Incorrect programming**: Double-check the injector coding and ensure it was programmed correctly with the right flow rate. - **Injector issue**: Even though the injector is new, it might still be defective, causing it to deliver too much fuel. - **Wiring or connection problem**: Check the wiring and connectors leading to the injector. Any loose connections or damaged wires could cause improper functioning. - **Fuel pressure issues**: If there's too much fuel pressure in the rail, it might cause the injector to inject more fuel than intended. Verify the fuel pressure regulator and fuel delivery system. ### 2. **P0100 - Mass Air Flow (MAF) Sensor Circuit High Input** This code refers to a high flow rate detected by the MAF sensor. This could be triggered by: - **Air leaks**: Check for vacuum leaks or leaks in the intake system after the MAF sensor. Any unmetered air entering the system can cause this code. - **MAF sensor contamination**: The sensor may be dirty or damaged. Clean the sensor and check for any obstructions in the air filter or air intake. - **Faulty MAF sensor**: Even if not previously malfunctioning, the sensor could fail or give incorrect readings after recent work. - **Faulty wiring/connector**: As with the injector, check the wiring and connectors going to the MAF sensor for damage or loose connections. ### Troubleshooting Steps: 1. **Recheck Injector Programming**: Confirm that the correct code for the new injector was entered, especially the flow rate calibration. 2. **Inspect Injector and Fuel System**: Test the injector's flow and check for any fuel pressure irregularities. 3. **Examine Air Intake and MAF Sensor**: Clean the MAF sensor and check for air leaks around the intake. 4. **Reset Codes and Test Drive**: After verifying everything, clear the codes and take the vehicle for another test drive to see if they recur. Let me know if you need more in-depth diagnostic steps or help with any specific checks!

Great tip! That cable tie trick can definitely save a lot of time and hassle during injector replacement. It’s those little preventative measures that make a big difference in keeping the job smooth and efficient. Thanks for sharing!

Hello! The injectors on the Citroën DS4 2013 with the 1.6 THP 16V 163 engine (EP6CDT M) are located on the engine's fuel rail, which is positioned directly on top of the intake manifold. Here's a more precise breakdown of their location: 1. **Engine Bay**: Open the hood and locate the engine cover, which may need to be removed to access the components underneath. 2. **Fuel Rail**: The injectors are mounted on the fuel rail, which is positioned along the top part of the engine, near the intake manifold. The fuel rail distributes fuel from the high-pressure fuel pump to each injector. 3. **Injector Positioning**: The injectors themselves are inserted directly into the intake manifold or cylinder head, with the electrical connectors facing upward or outward. 4. **Accessibility**: To access the injectors, you may need to remove various components, such as the engine cover, intake manifold cover, or other parts obstructing the view and access to the fuel rail. If you plan to work on the injectors, ensure the engine is cool and take necessary precautions, as working with fuel systems can be hazardous.

@@sanumotorswithcharlie I really thank you for the great explanation !

Yes bit compact. Thank you

Low compression in one cylinder, such as cylinder no. 3 in your Peugeot 308 T9 (2014), can be caused by several potential issues. Since you've already changed the spark plug with no improvement, other possible causes could include: ### 1. **Faulty Fuel Injector:** - A **bad fuel injector** can lead to improper fuel delivery, which might cause misfires or poor combustion in the affected cylinder. However, while a faulty injector can affect performance, it typically does not directly cause low compression. That said, it's still worth checking the injector for proper operation as part of the diagnosis. ### 2. **Bent or Stuck Valve:** - A **bent valve** or a valve that is not sealing properly (possibly due to carbon buildup or a mechanical failure) can lead to low compression. If the intake or exhaust valve is not sealing fully, the combustion chamber cannot maintain the correct pressure, leading to low compression in that cylinder. ### 3. **Blown Head Gasket:** - A **blown head gasket** can cause a loss of compression if it fails between the cylinder and an adjacent coolant or oil passage. This would typically be accompanied by other symptoms like coolant loss, overheating, or oil contamination. ### 4. **Piston Ring Damage:** - **Worn or damaged piston rings** can lead to a loss of compression as they fail to create a proper seal between the piston and the cylinder wall. This often results in noticeable symptoms like increased oil consumption or blue smoke from the exhaust. ### 5. **Cylinder Wall Damage:** - **Scoring or wear on the cylinder walls** can also cause low compression. This is less common but can occur if the engine has been subjected to poor lubrication or a severe mechanical issue. ### Recommended Steps: 1. **Perform a Compression Test or Leak-Down Test:** - If not already done, performing a compression test can confirm the extent of the compression loss in cylinder no. 3. A leak-down test can help pinpoint whether the issue lies with the valves, head gasket, or piston rings. 2. **Inspect the Fuel Injector:** - Check if the fuel injector for cylinder no. 3 is working properly. If it's clogged or malfunctioning, it might need cleaning or replacement. 3. **Check Valve Operation:** - Inspect the valves in cylinder no. 3. This may require removing the cylinder head to see if there's a bent valve or if the valves are not seating properly. 4. **Consult a Professional Mechanic:** - Given the complexity of diagnosing and repairing internal engine components, it may be wise to consult with a professional mechanic, particularly one familiar with Peugeot vehicles. They can perform the necessary diagnostic tests and repairs. ### Recommendation for Service: Since I can't provide specific mechanics directly, I recommend searching for a Peugeot specialist or a well-reviewed local mechanic in your area who has experience with European vehicles. You can also consider taking the vehicle to an authorized Peugeot service center, where they can provide accurate diagnostics and repairs specific to your model. If you're experiencing this issue frequently, addressing it promptly is important to avoid more severe damage to the engine.

@@sanumotorswithcharlie thanks a lot sir for your brief explanation, i will give a try to leak down test and change whole fuel injector rail because this is the only thing i can afford now rest is too expensive as you know . Anyway thanks once again stay blessed

You're welcome! I'm glad to hear that the video helped you repair your car. If you have any more questions or need further assistance, feel free to ask. Happy driving! 🚗✨

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Good day! If you replace a fuel injector in a Peugeot 308, it is often necessary to reprogram or "code" the new injector to the vehicle's engine control unit (ECU). Modern vehicles, including the Peugeot 308, use precise electronic control systems to manage fuel delivery, and the ECU needs to know the specific characteristics of each injector to optimize performance. Here's a step-by-step guide to address your issue: 1. **Replace the Faulty Injector**: Make sure you replace the faulty injector with the correct part for your vehicle. 2. **Reprogram the Injector**: - You will need a diagnostic tool that is compatible with Peugeot vehicles, such as the Peugeot Planet System (PPS) or Diagbox. - Connect the diagnostic tool to the OBD-II port of your vehicle. - Follow the tool's instructions to program the new injector. This typically involves entering the injector's unique code into the ECU. 3. **Diagnose the Cylinder Issue**: - After reprogramming, use the diagnostic tool to run a cylinder balance test or similar diagnostic procedure to ensure that the new injector is functioning correctly. - Check for any stored fault codes that could indicate other issues with the cylinder, such as problems with the spark plug, ignition coil, or compression. 4. **Check the Radiator Fan**: - The radiator fan running at high speed can indicate that the engine is overheating or that there is an issue with the cooling system. - Ensure that the coolant level is correct and that there are no leaks in the system. - Use the diagnostic tool to check the temperature readings from the engine coolant temperature sensor. 5. **Clear Fault Codes**: Once all repairs and checks are complete, clear any fault codes from the ECU using the diagnostic tool. 6. **Test Drive**: Perform a test drive to ensure that the engine runs smoothly and that the radiator fan operates normally. If you are not comfortable performing these steps yourself, it is recommended to take your vehicle to a qualified mechanic or a Peugeot service center. They will have the necessary tools and expertise to diagnose and fix the issue properly.

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It sounds like you've encountered an issue where the injector coding process did not clear the previous code completely, leading to the system showing two codes for injector 4. This could happen due to a few reasons: 1. **Coding Procedure Issue**: Sometimes, during the injector coding process, the old code isn't entirely overwritten or properly cleared from the ECU memory. This can result in both the old and new codes being displayed. The ECU might retain a placeholder or residual code from an earlier injector, even if it doesn't match the old injector's code. 2. **Software Glitch**: There may be a software glitch or bug in the diagnostic tool or the ECU software that causes it to display multiple codes. This is less common but can happen, especially if there are compatibility issues with the diagnostic tool used for coding. 3. **Incorrect Injector Identification**: The code `4ZFGGG` could be a generic or placeholder code that was mistakenly recognized by the system. Sometimes, the ECU can misread an injector's code if the previous coding process was interrupted or not fully completed, resulting in unexpected or unknown codes appearing. 4. **Memory Cache or Buffer Issue**: Some ECUs temporarily store injector codes in memory caches. If the cache isn’t properly cleared when the new code is written, the system might show both the old and new codes. ### What You Can Do: 1. **Re-check the Coding**: Attempt the injector coding procedure again to ensure that the ECU only recognizes the new code `9FFGGG`. Make sure the process is completed without interruption. 2. **Clear Fault Codes and Adaptations**: Use your diagnostic tool to clear any fault codes and reset any adaptations related to injectors. This can help clear any residual codes that may have been left in the system. 3. **ECU Relearn Procedure**: Perform an ECU relearn or reset procedure if available in your diagnostic tool. This will help the ECU recognize only the newly installed components and their codes. 4. **Check Software Updates**: Ensure your diagnostic tool and the ECU software are up-to-date. Sometimes, a software update resolves such issues. 5. **Inspect Injector Connections**: Double-check the injector connections to ensure there are no communication errors between the injector and the ECU. If the issue persists, it may be beneficial to consult with a specialist who can perform a deeper diagnostic of the ECU to ensure the injector codes are correctly recognized and stored.

@@sanumotorswithcharlie Thank you for your time and help. I did checked all injectors what codes they have , injector 1 have as well 2 codes. Injectors 2&3 by one code. Let’s say can be reason these things that on injector 4 i have 2 codes , because I replaced not new injector but second hand injector. I did find some info that for second hand injector can’t make any coding , it’s true or no it don’t know. Maybe you can tell me ? Thank you

You're welcome! Regarding your question about injectors, it's quite common to encounter issues when using second-hand injectors, especially with coding. Modern fuel injectors are often coded to the ECU (Engine Control Unit) to ensure precise fuel delivery and performance. This coding process involves programming the unique flow characteristics of each injector into the ECU, which helps maintain the engine's efficiency and reduces emissions. Here are some key points about coding second-hand injectors: 1. **Injector Coding Requirement**: Not all vehicles require injectors to be coded, but for those that do, the coding must match the specific flow rates and characteristics of each injector. This helps the ECU make precise adjustments for fuel delivery. 2. **Using Second-Hand Injectors**: When using a second-hand injector, it might already have a different code from the original one installed in your vehicle. If the coding is mismatched or cannot be reprogrammed correctly, it can cause error codes, misfires, or performance issues. 3. **Coding Second-Hand Injectors**: In many cases, coding second-hand injectors is possible but can be problematic. Some second-hand injectors cannot be re-coded if they were previously programmed to a different vehicle's ECU. It depends on the injector type and the vehicle's system. 4. **Error Codes**: If your injector 4 is showing two codes, it could indeed be related to the fact that it's a second-hand unit. These codes can be due to the coding mismatch or the ECU struggling to recognize or correctly calibrate the injector. In summary, the issue you're facing could very well be related to the second-hand injector's coding. If the injector can't be coded properly, it may cause recurring issues. It might be worth considering a new injector to avoid these problems, especially if proper coding is required for your vehicle. If you have further questions or need help with the process, feel free to ask!

@@sanumotorswithcharlie Thank you so much for your time !!! On injector 4 code is 9FFGGG and on system when checking by diagnostic tool shows like 4ZFGGG-9FFGGG On injector 1 code is 9CFGFG and on system with diagnostic tool shows 4WFGFG-9CFGFG Strangest thing is that first unknown code for both injectors last 4 digits same as on the injector its FGFG Same on injector 4 last 4 digits same FGGG

Thank You

Glad it was helpful!