Canyon Diesel Power Loss Points to Fuel System Issues

I experienced nearly identical symptoms on my 2020 GMC Sierra diesel. The check engine light came on, accompanied by power loss and jerky acceleration. After diagnosis, it turned out the fuel injectors were indeed the culprit, one was severely clogged and another was leaking. The repair involved removing and testing all injectors. The faulty ones were not cleaning the nozzles properly, leading to poor air-fuel ratio and inconsistent spray patterns. This directly affected combustion efficiency and engine performance. This is considered a serious issue that requires immediate attention, as faulty injectors can lead to: Further engine damage, Increased fuel consumption, Failed emissions tests, Potential engine misfires The throttle body was also inspected but was functioning properly. The intake manifold showed some carbon buildup, which was cleaned during the service. After replacing the problematic injectors and cleaning the fuel system, the engine returned to smooth operation. Would strongly recommend having your injectors tested, as the symptoms align perfectly with injector failure. Delaying the repair could lead to more extensive engine damage.

I experienced nearly identical symptoms on my 2020 GMC Sierra diesel. The check engine light came on, accompanied by power loss and jerky acceleration. After diagnosis, it turned out the fuel injectors were indeed the culprit, one was severely clogged and another was leaking. The repair involved removing and testing all injectors. The faulty ones were not cleaning the nozzles properly, leading to poor air-fuel ratio and inconsistent spray patterns. This directly affected combustion efficiency and engine performance. This is considered a serious issue that requires immediate attention, as faulty injectors can lead to: Further engine damage, Increased fuel consumption, Failed emissions tests, Potential engine misfires The throttle body was also inspected but was functioning properly. The intake manifold showed some carbon buildup, which was cleaned during the service. After replacing the problematic injectors and cleaning the fuel system, the engine returned to smooth operation. Would strongly recommend having your injectors tested, as the symptoms align perfectly with injector failure. Delaying the repair could lead to more extensive engine damage.

I experienced nearly identical symptoms on my 2020 GMC Sierra diesel. The check engine light came on, accompanied by power loss and jerky acceleration. After diagnosis, it turned out the fuel injectors were indeed the culprit, one was severely clogged and another was leaking. The repair involved removing and testing all injectors. The faulty ones were not cleaning the nozzles properly, leading to poor air-fuel ratio and inconsistent spray patterns. This directly affected combustion efficiency and engine performance. This is considered a serious issue that requires immediate attention, as faulty injectors can lead to: Further engine damage, Increased fuel consumption, Failed emissions tests, Potential engine misfires The throttle body was also inspected but was functioning properly. The intake manifold showed some carbon buildup, which was cleaned during the service. After replacing the problematic injectors and cleaning the fuel system, the engine returned to smooth operation. Would strongly recommend having your injectors tested, as the symptoms align perfectly with injector failure. Delaying the repair could lead to more extensive engine damage.

I experienced nearly identical symptoms on my 2020 GMC Sierra diesel. The check engine light came on, accompanied by power loss and jerky acceleration. After diagnosis, it turned out the fuel injectors were indeed the culprit, one was severely clogged and another was leaking. The repair involved removing and testing all injectors. The faulty ones were not cleaning the nozzles properly, leading to poor air-fuel ratio and inconsistent spray patterns. This directly affected combustion efficiency and engine performance. This is considered a serious issue that requires immediate attention, as faulty injectors can lead to: Further engine damage, Increased fuel consumption, Failed emissions tests, Potential engine misfires The throttle body was also inspected but was functioning properly. The intake manifold showed some carbon buildup, which was cleaned during the service. After replacing the problematic injectors and cleaning the fuel system, the engine returned to smooth operation. Would strongly recommend having your injectors tested, as the symptoms align perfectly with injector failure. Delaying the repair could lead to more extensive engine damage.

Thanks for the detailed response about the injector issues. My situation does sound very similar. The check engine light has been consistent and the mass air flow sensor readings are all over the place. The power loss is especially noticeable when merging onto highways. Did you remember roughly how much you paid for the injector replacement? Also curious if youve had any other issues pop up since the repair, particularly with the EGR valve or oxygen sensor? My mechanic mentioned these might need attention too but Im trying to prioritize the most critical fixes first.

Thanks for the detailed response about the injector issues. My situation does sound very similar. The check engine light has been consistent and the mass air flow sensor readings are all over the place. The power loss is especially noticeable when merging onto highways. Did you remember roughly how much you paid for the injector replacement? Also curious if youve had any other issues pop up since the repair, particularly with the EGR valve or oxygen sensor? My mechanic mentioned these might need attention too but Im trying to prioritize the most critical fixes first.

Thanks for the detailed response about the injector issues. My situation does sound very similar. The check engine light has been consistent and the mass air flow sensor readings are all over the place. The power loss is especially noticeable when merging onto highways. Did you remember roughly how much you paid for the injector replacement? Also curious if youve had any other issues pop up since the repair, particularly with the EGR valve or oxygen sensor? My mechanic mentioned these might need attention too but Im trying to prioritize the most critical fixes first.

Thanks for the detailed response about the injector issues. My situation does sound very similar. The check engine light has been consistent and the mass air flow sensor readings are all over the place. The power loss is especially noticeable when merging onto highways. Did you remember roughly how much you paid for the injector replacement? Also curious if youve had any other issues pop up since the repair, particularly with the EGR valve or oxygen sensor? My mechanic mentioned these might need attention too but Im trying to prioritize the most critical fixes first.

Thanks for asking about the costs. The injector repair was definitely worth it, I paid 515 Euro for replacing the defective fuel injector, including parts and labor. The running too lean condition has been completely resolved since the fix. The mass air flow sensor readings you mentioned stabilized after the injector replacement. My engine is now running at optimal fuel-air mixture, with no more power loss during acceleration. Since the repair, I haven't experienced any issues with the EGR valve or other components. The fuel injector was indeed the root cause. Having properly functioning injectors made a huge difference in overall engine performance and eliminated those erratic MAF readings. If your symptoms match what I experienced, focusing on the fuel injectors first is the right approach. The EGR valve and oxygen sensor checks can wait if they're not showing immediate problems. A faulty injector can definitely cause the symptoms you're describing, especially that power loss during highway merging.

Thanks for asking about the costs. The injector repair was definitely worth it, I paid 515 Euro for replacing the defective fuel injector, including parts and labor. The running too lean condition has been completely resolved since the fix. The mass air flow sensor readings you mentioned stabilized after the injector replacement. My engine is now running at optimal fuel-air mixture, with no more power loss during acceleration. Since the repair, I haven't experienced any issues with the EGR valve or other components. The fuel injector was indeed the root cause. Having properly functioning injectors made a huge difference in overall engine performance and eliminated those erratic MAF readings. If your symptoms match what I experienced, focusing on the fuel injectors first is the right approach. The EGR valve and oxygen sensor checks can wait if they're not showing immediate problems. A faulty injector can definitely cause the symptoms you're describing, especially that power loss during highway merging.

Thanks for asking about the costs. The injector repair was definitely worth it, I paid 515 Euro for replacing the defective fuel injector, including parts and labor. The running too lean condition has been completely resolved since the fix. The mass air flow sensor readings you mentioned stabilized after the injector replacement. My engine is now running at optimal fuel-air mixture, with no more power loss during acceleration. Since the repair, I haven't experienced any issues with the EGR valve or other components. The fuel injector was indeed the root cause. Having properly functioning injectors made a huge difference in overall engine performance and eliminated those erratic MAF readings. If your symptoms match what I experienced, focusing on the fuel injectors first is the right approach. The EGR valve and oxygen sensor checks can wait if they're not showing immediate problems. A faulty injector can definitely cause the symptoms you're describing, especially that power loss during highway merging.

Thanks for asking about the costs. The injector repair was definitely worth it, I paid 515 Euro for replacing the defective fuel injector, including parts and labor. The running too lean condition has been completely resolved since the fix. The mass air flow sensor readings you mentioned stabilized after the injector replacement. My engine is now running at optimal fuel-air mixture, with no more power loss during acceleration. Since the repair, I haven't experienced any issues with the EGR valve or other components. The fuel injector was indeed the root cause. Having properly functioning injectors made a huge difference in overall engine performance and eliminated those erratic MAF readings. If your symptoms match what I experienced, focusing on the fuel injectors first is the right approach. The EGR valve and oxygen sensor checks can wait if they're not showing immediate problems. A faulty injector can definitely cause the symptoms you're describing, especially that power loss during highway merging.

I took my Canyon to the shop last week after reading these responses. The mechanic confirmed it was indeed the fuel injectors causing the problems. The diagnosis showed two injectors weren't spraying properly, leading to poor air-fuel ratio and the jerky performance. The repair cost came to 980 Euro for replacing both faulty injectors. While not cheap, the difference in performance is remarkable. The mass air flow sensor readings have stabilized and the check engine light is finally off. Most importantly, the power loss and jerking during acceleration are completely gone. The mechanic did a thorough inspection of the catalytic converter and EGR valve while the work was being done. Both checked out fine, so no additional repairs were needed. The entire job took about 6 hours, but the results were worth the wait and cost. The truck now runs like new again, smooth acceleration, consistent power delivery, and no more warning lights. Really glad I got this fixed before it led to bigger problems.

I took my Canyon to the shop last week after reading these responses. The mechanic confirmed it was indeed the fuel injectors causing the problems. The diagnosis showed two injectors weren't spraying properly, leading to poor air-fuel ratio and the jerky performance. The repair cost came to 980 Euro for replacing both faulty injectors. While not cheap, the difference in performance is remarkable. The mass air flow sensor readings have stabilized and the check engine light is finally off. Most importantly, the power loss and jerking during acceleration are completely gone. The mechanic did a thorough inspection of the catalytic converter and EGR valve while the work was being done. Both checked out fine, so no additional repairs were needed. The entire job took about 6 hours, but the results were worth the wait and cost. The truck now runs like new again, smooth acceleration, consistent power delivery, and no more warning lights. Really glad I got this fixed before it led to bigger problems.

I took my Canyon to the shop last week after reading these responses. The mechanic confirmed it was indeed the fuel injectors causing the problems. The diagnosis showed two injectors weren't spraying properly, leading to poor air-fuel ratio and the jerky performance. The repair cost came to 980 Euro for replacing both faulty injectors. While not cheap, the difference in performance is remarkable. The mass air flow sensor readings have stabilized and the check engine light is finally off. Most importantly, the power loss and jerking during acceleration are completely gone. The mechanic did a thorough inspection of the catalytic converter and EGR valve while the work was being done. Both checked out fine, so no additional repairs were needed. The entire job took about 6 hours, but the results were worth the wait and cost. The truck now runs like new again, smooth acceleration, consistent power delivery, and no more warning lights. Really glad I got this fixed before it led to bigger problems.

I took my Canyon to the shop last week after reading these responses. The mechanic confirmed it was indeed the fuel injectors causing the problems. The diagnosis showed two injectors weren't spraying properly, leading to poor air-fuel ratio and the jerky performance. The repair cost came to 980 Euro for replacing both faulty injectors. While not cheap, the difference in performance is remarkable. The mass air flow sensor readings have stabilized and the check engine light is finally off. Most importantly, the power loss and jerking during acceleration are completely gone. The mechanic did a thorough inspection of the catalytic converter and EGR valve while the work was being done. Both checked out fine, so no additional repairs were needed. The entire job took about 6 hours, but the results were worth the wait and cost. The truck now runs like new again, smooth acceleration, consistent power delivery, and no more warning lights. Really glad I got this fixed before it led to bigger problems.