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sophiakoenig1

Audi Q2 Diesel Injector Issues: Key Warning Signs

My 2021 Audi Q2 diesel is showing multiple symptoms that point to injection problems. The engine starts poorly, stalls at idle, and runs very rough. Fuel consumption has increased noticeably, and there is a clear lack of power. I suspect faulty injector nozzles might be causing these issues. Has anyone dealt with similar injection-related problems? Particularly interested in repair experiences and workshop diagnoses to confirm if injectors were the root cause. Were there any specific tests that helped identify the problem? Any insights on repair costs would be helpful.

4 comment(s)

johannavogel51

I had a very similar issue with my 2019 Audi Q3 diesel last year. With some experience working on cars, I recognized these symptoms right away as potential injection problems. The vehicle showed identical performance issues, rough idling, poor starts, and significant power loss. The gasoline consumption increase was particularly noticeable on my daily drives. After multiple misfires, I took it to a workshop where they diagnosed clogging in the injection valves. They performed several diagnostic tests, including: Injection pressure testing, Computer diagnostic scan, Compression testing, Fuel sample analysis The fix involved cleaning and recalibrating the injection system, which resolved all symptoms. Total cost was 515 Euro including parts and labor. To provide more specific advice about your Q2, could you share: Current mileage, Service history, Type of fuel typically used, Any error codes showing, When symptoms first appeared These details would help determine if your issue matches what I experienced and whether you might need similar repairs.

johannavogel51

I had a very similar issue with my 2019 Audi Q3 diesel last year. With some experience working on cars, I recognized these symptoms right away as potential injection problems. The vehicle showed identical performance issues, rough idling, poor starts, and significant power loss. The gasoline consumption increase was particularly noticeable on my daily drives. After multiple misfires, I took it to a workshop where they diagnosed clogging in the injection valves. They performed several diagnostic tests, including: Injection pressure testing, Computer diagnostic scan, Compression testing, Fuel sample analysis The fix involved cleaning and recalibrating the injection system, which resolved all symptoms. Total cost was 515 Euro including parts and labor. To provide more specific advice about your Q2, could you share: Current mileage, Service history, Type of fuel typically used, Any error codes showing, When symptoms first appeared These details would help determine if your issue matches what I experienced and whether you might need similar repairs.

johannavogel51

I had a very similar issue with my 2019 Audi Q3 diesel last year. With some experience working on cars, I recognized these symptoms right away as potential injection problems. The vehicle showed identical performance issues, rough idling, poor starts, and significant power loss. The gasoline consumption increase was particularly noticeable on my daily drives. After multiple misfires, I took it to a workshop where they diagnosed clogging in the injection valves. They performed several diagnostic tests, including: Injection pressure testing, Computer diagnostic scan, Compression testing, Fuel sample analysis The fix involved cleaning and recalibrating the injection system, which resolved all symptoms. Total cost was 515 Euro including parts and labor. To provide more specific advice about your Q2, could you share: Current mileage, Service history, Type of fuel typically used, Any error codes showing, When symptoms first appeared These details would help determine if your issue matches what I experienced and whether you might need similar repairs.

johannavogel51

I had a very similar issue with my 2019 Audi Q3 diesel last year. With some experience working on cars, I recognized these symptoms right away as potential injection problems. The vehicle showed identical performance issues, rough idling, poor starts, and significant power loss. The gasoline consumption increase was particularly noticeable on my daily drives. After multiple misfires, I took it to a workshop where they diagnosed clogging in the injection valves. They performed several diagnostic tests, including: Injection pressure testing, Computer diagnostic scan, Compression testing, Fuel sample analysis The fix involved cleaning and recalibrating the injection system, which resolved all symptoms. Total cost was 515 Euro including parts and labor. To provide more specific advice about your Q2, could you share: Current mileage, Service history, Type of fuel typically used, Any error codes showing, When symptoms first appeared These details would help determine if your issue matches what I experienced and whether you might need similar repairs.

johannavogel51

I had a very similar issue with my 2019 Audi Q3 diesel last year. With some experience working on cars, I recognized these symptoms right away as potential injection problems. The vehicle showed identical performance issues, rough idling, poor starts, and significant power loss. The gasoline consumption increase was particularly noticeable on my daily drives. After multiple misfires, I took it to a workshop where they diagnosed clogging in the injection valves. They performed several diagnostic tests, including: Injection pressure testing, Computer diagnostic scan, Compression testing, Fuel sample analysis The fix involved cleaning and recalibrating the injection system, which resolved all symptoms. Total cost was 515 Euro including parts and labor. To provide more specific advice about your Q2, could you share: Current mileage, Service history, Type of fuel typically used, Any error codes showing, When symptoms first appeared These details would help determine if your issue matches what I experienced and whether you might need similar repairs.

sophiakoenig1 (Author)

After 34893 KM and serviced last month, I can confirm similar symptoms appeared in my vehicle. The engine issues worsened gradually over 2 weeks. Initially thought it was poor quality fuel, but cleaning additives made no difference. Most concerning is the rough idle and stalling, especially during cold starts. No error codes displayed yet, but the engine performance decline is obvious. Using only premium diesel from major stations. Suspect the misfire symptoms point to injector problems as suggested. Wondering if complete injector replacement might be needed rather than just cleaning. Would appreciate input about long-term reliability after injector service. This clogging issue seems common in these engines despite regular maintenance.

sophiakoenig1 (Author)

After 34893 KM and serviced last month, I can confirm similar symptoms appeared in my vehicle. The engine issues worsened gradually over 2 weeks. Initially thought it was poor quality fuel, but cleaning additives made no difference. Most concerning is the rough idle and stalling, especially during cold starts. No error codes displayed yet, but the engine performance decline is obvious. Using only premium diesel from major stations. Suspect the misfire symptoms point to injector problems as suggested. Wondering if complete injector replacement might be needed rather than just cleaning. Would appreciate input about long-term reliability after injector service. This clogging issue seems common in these engines despite regular maintenance.

sophiakoenig1 (Author)

After 34893 KM and serviced last month, I can confirm similar symptoms appeared in my vehicle. The engine issues worsened gradually over 2 weeks. Initially thought it was poor quality fuel, but cleaning additives made no difference. Most concerning is the rough idle and stalling, especially during cold starts. No error codes displayed yet, but the engine performance decline is obvious. Using only premium diesel from major stations. Suspect the misfire symptoms point to injector problems as suggested. Wondering if complete injector replacement might be needed rather than just cleaning. Would appreciate input about long-term reliability after injector service. This clogging issue seems common in these engines despite regular maintenance.

sophiakoenig1 (Author)

After 34893 KM and serviced last month, I can confirm similar symptoms appeared in my vehicle. The engine issues worsened gradually over 2 weeks. Initially thought it was poor quality fuel, but cleaning additives made no difference. Most concerning is the rough idle and stalling, especially during cold starts. No error codes displayed yet, but the engine performance decline is obvious. Using only premium diesel from major stations. Suspect the misfire symptoms point to injector problems as suggested. Wondering if complete injector replacement might be needed rather than just cleaning. Would appreciate input about long-term reliability after injector service. This clogging issue seems common in these engines despite regular maintenance.

sophiakoenig1 (Author)

After 34893 KM and serviced last month, I can confirm similar symptoms appeared in my vehicle. The engine issues worsened gradually over 2 weeks. Initially thought it was poor quality fuel, but cleaning additives made no difference. Most concerning is the rough idle and stalling, especially during cold starts. No error codes displayed yet, but the engine performance decline is obvious. Using only premium diesel from major stations. Suspect the misfire symptoms point to injector problems as suggested. Wondering if complete injector replacement might be needed rather than just cleaning. Would appreciate input about long-term reliability after injector service. This clogging issue seems common in these engines despite regular maintenance.

johannavogel51

Thanks for the additional details about your Q2. My Q3 had similar symptoms that developed over a few weeks, and I also initially tried fuel additives without success. In my case, while cleaning resolved the immediate issues, I did end up replacing two injectors about 6 months later when the symptoms returned. The full injector replacement provided much better long-term reliability compared to just cleaning. The diesel engine in these models can be sensitive to injector wear, even with proper maintenance. My repair experience showed that: Initial cleaning and calibration worked temporarily, Full replacement of faulty injectors was ultimately needed, Cost for injector replacement was around 1200 Euro, Engine performance returned to normal after replacement, No issues in 18 months since the repair Based on your mileage and symptoms matching mine so closely, I recommend getting a full injector diagnostic. The emissions values from this test will indicate whether cleaning might work or if replacement is the better option. Consider having all injectors tested even if only some show problems, as they tend to wear at similar rates. The investment in replacement rather than repeated cleaning saved money in the long run.

johannavogel51

Thanks for the additional details about your Q2. My Q3 had similar symptoms that developed over a few weeks, and I also initially tried fuel additives without success. In my case, while cleaning resolved the immediate issues, I did end up replacing two injectors about 6 months later when the symptoms returned. The full injector replacement provided much better long-term reliability compared to just cleaning. The diesel engine in these models can be sensitive to injector wear, even with proper maintenance. My repair experience showed that: Initial cleaning and calibration worked temporarily, Full replacement of faulty injectors was ultimately needed, Cost for injector replacement was around 1200 Euro, Engine performance returned to normal after replacement, No issues in 18 months since the repair Based on your mileage and symptoms matching mine so closely, I recommend getting a full injector diagnostic. The emissions values from this test will indicate whether cleaning might work or if replacement is the better option. Consider having all injectors tested even if only some show problems, as they tend to wear at similar rates. The investment in replacement rather than repeated cleaning saved money in the long run.

johannavogel51

Thanks for the additional details about your Q2. My Q3 had similar symptoms that developed over a few weeks, and I also initially tried fuel additives without success. In my case, while cleaning resolved the immediate issues, I did end up replacing two injectors about 6 months later when the symptoms returned. The full injector replacement provided much better long-term reliability compared to just cleaning. The diesel engine in these models can be sensitive to injector wear, even with proper maintenance. My repair experience showed that: Initial cleaning and calibration worked temporarily, Full replacement of faulty injectors was ultimately needed, Cost for injector replacement was around 1200 Euro, Engine performance returned to normal after replacement, No issues in 18 months since the repair Based on your mileage and symptoms matching mine so closely, I recommend getting a full injector diagnostic. The emissions values from this test will indicate whether cleaning might work or if replacement is the better option. Consider having all injectors tested even if only some show problems, as they tend to wear at similar rates. The investment in replacement rather than repeated cleaning saved money in the long run.

johannavogel51

Thanks for the additional details about your Q2. My Q3 had similar symptoms that developed over a few weeks, and I also initially tried fuel additives without success. In my case, while cleaning resolved the immediate issues, I did end up replacing two injectors about 6 months later when the symptoms returned. The full injector replacement provided much better long-term reliability compared to just cleaning. The diesel engine in these models can be sensitive to injector wear, even with proper maintenance. My repair experience showed that: Initial cleaning and calibration worked temporarily, Full replacement of faulty injectors was ultimately needed, Cost for injector replacement was around 1200 Euro, Engine performance returned to normal after replacement, No issues in 18 months since the repair Based on your mileage and symptoms matching mine so closely, I recommend getting a full injector diagnostic. The emissions values from this test will indicate whether cleaning might work or if replacement is the better option. Consider having all injectors tested even if only some show problems, as they tend to wear at similar rates. The investment in replacement rather than repeated cleaning saved money in the long run.

johannavogel51

Thanks for the additional details about your Q2. My Q3 had similar symptoms that developed over a few weeks, and I also initially tried fuel additives without success. In my case, while cleaning resolved the immediate issues, I did end up replacing two injectors about 6 months later when the symptoms returned. The full injector replacement provided much better long-term reliability compared to just cleaning. The diesel engine in these models can be sensitive to injector wear, even with proper maintenance. My repair experience showed that: Initial cleaning and calibration worked temporarily, Full replacement of faulty injectors was ultimately needed, Cost for injector replacement was around 1200 Euro, Engine performance returned to normal after replacement, No issues in 18 months since the repair Based on your mileage and symptoms matching mine so closely, I recommend getting a full injector diagnostic. The emissions values from this test will indicate whether cleaning might work or if replacement is the better option. Consider having all injectors tested even if only some show problems, as they tend to wear at similar rates. The investment in replacement rather than repeated cleaning saved money in the long run.

sophiakoenig1 (Author)

Thanks for all the detailed info about your Q3 experience. Your progression from cleaning to eventual replacement matches what I was worried about with my Q2. The emissions symptoms and diesel engine behavior you described align exactly with what I am seeing. Makes sense that these injectors often need full replacement rather than just cleaning, given how precise they need to be for proper operation. I will book a diagnostic test focusing on the injection system and get proper emissions testing done. The cost estimate of around 1200 Euro for replacement is helpful for planning. Good to hear you had no issues for 18 months after fixing it properly rather than just cleaning. Given the relatively low mileage on my Q2, I am a bit frustrated about facing injector problems already. But better to address it now before the clogging causes more serious engine damage. Appreciate you sharing your repair journey, helps confirm I am on the right track with the diagnosis.

sophiakoenig1 (Author)

Thanks for all the detailed info about your Q3 experience. Your progression from cleaning to eventual replacement matches what I was worried about with my Q2. The emissions symptoms and diesel engine behavior you described align exactly with what I am seeing. Makes sense that these injectors often need full replacement rather than just cleaning, given how precise they need to be for proper operation. I will book a diagnostic test focusing on the injection system and get proper emissions testing done. The cost estimate of around 1200 Euro for replacement is helpful for planning. Good to hear you had no issues for 18 months after fixing it properly rather than just cleaning. Given the relatively low mileage on my Q2, I am a bit frustrated about facing injector problems already. But better to address it now before the clogging causes more serious engine damage. Appreciate you sharing your repair journey, helps confirm I am on the right track with the diagnosis.

sophiakoenig1 (Author)

Thanks for all the detailed info about your Q3 experience. Your progression from cleaning to eventual replacement matches what I was worried about with my Q2. The emissions symptoms and diesel engine behavior you described align exactly with what I am seeing. Makes sense that these injectors often need full replacement rather than just cleaning, given how precise they need to be for proper operation. I will book a diagnostic test focusing on the injection system and get proper emissions testing done. The cost estimate of around 1200 Euro for replacement is helpful for planning. Good to hear you had no issues for 18 months after fixing it properly rather than just cleaning. Given the relatively low mileage on my Q2, I am a bit frustrated about facing injector problems already. But better to address it now before the clogging causes more serious engine damage. Appreciate you sharing your repair journey, helps confirm I am on the right track with the diagnosis.

sophiakoenig1 (Author)

Thanks for all the detailed info about your Q3 experience. Your progression from cleaning to eventual replacement matches what I was worried about with my Q2. The emissions symptoms and diesel engine behavior you described align exactly with what I am seeing. Makes sense that these injectors often need full replacement rather than just cleaning, given how precise they need to be for proper operation. I will book a diagnostic test focusing on the injection system and get proper emissions testing done. The cost estimate of around 1200 Euro for replacement is helpful for planning. Good to hear you had no issues for 18 months after fixing it properly rather than just cleaning. Given the relatively low mileage on my Q2, I am a bit frustrated about facing injector problems already. But better to address it now before the clogging causes more serious engine damage. Appreciate you sharing your repair journey, helps confirm I am on the right track with the diagnosis.

sophiakoenig1 (Author)

Thanks for all the detailed info about your Q3 experience. Your progression from cleaning to eventual replacement matches what I was worried about with my Q2. The emissions symptoms and diesel engine behavior you described align exactly with what I am seeing. Makes sense that these injectors often need full replacement rather than just cleaning, given how precise they need to be for proper operation. I will book a diagnostic test focusing on the injection system and get proper emissions testing done. The cost estimate of around 1200 Euro for replacement is helpful for planning. Good to hear you had no issues for 18 months after fixing it properly rather than just cleaning. Given the relatively low mileage on my Q2, I am a bit frustrated about facing injector problems already. But better to address it now before the clogging causes more serious engine damage. Appreciate you sharing your repair journey, helps confirm I am on the right track with the diagnosis.

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