Toyota CHR Cold Start Issue

I had similar cold start issues with my Toyota CHR a while back, although it's an older model. Sounds like you're on the right track suspecting the injectors. Have you considered performing an injector balance test or inspecting the spray pattern? That might help pinpoint the defective injector.

Thanks for the insight. I haven't done an injector balance test yet. Can you elaborate on how you performed the injector test on your CHR, and what specific symptoms did you observe?

I didn't do the injector test myself, to be honest. I took it to a trusted workshop after experiencing rough idling and poor acceleration during cold starts, much like you described. They confirmed it was a defective injector after running diagnostics. I'd recommend doing the same to be sure.

Understood. I appreciate the advice. I will take it to a local workshop for professional diagnostics. Seems like the most reliable way to pinpoint the problem. Thanks again for sharing your experience!