Lexus IS Injection Nozzle Issue

Having trouble with my 2021 Lexus IS hybrid. It's got about 199952 km. Lately, it's been starting poorly, and I've noticed my fuel consumption has gone up. Engine power feels reduced, and the engine is idling unevenly, sometimes even stalling at idle. I've scanned the OBD and it points towards misfires and lean mixture. Suspecting a defective injection nozzle, possibly just a dirty injection valve. Anyone experienced similar issues?

4 comment(s)

I had a similar issue with my Lexus IS. Rough idling, poor starting – it was a nightmare. Have you checked your emissions? It could be a sign of a faulty injector. When mine went bad, it was like driving a tractor. How many kilometers are on your car and did you try injector cleaner?

Thanks for the quick reply! My emissions are definitely higher than usual. I've tried injector cleaner, but no luck. The car has almost 200000 km. Did you also experience reduced engine power? How did you eventually solve your problem?

Yep, reduced power was a big symptom. Felt like I was missing a cylinder or two. Given that you've tried injector cleaner and the symptoms persist, especially with the higher mileage, I'd say it's time to visit a workshop. They can properly diagnose and replace the faulty nozzle. Don't wait too long, as it can potentially damage other engine components.

Thanks a lot for sharing your experience! I took your advice and brought it to a workshop. Turns out, you were spot on – it was a defective injection nozzle. The repair cost me around 515€, but now the car runs like new again. I appreciate your help!

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