Seeking advice on diagnosing and fixing cold start issues in 2021 Renault Arkana Hybrid

Hey there! I've got a Renault Clio, 2017 model, which is kind of like your younger brother's Arkana. I'm not an expert by any means, but I've messed around with my Clio a bit. You're right on the money with the injector problem - had a similar issue happening to my Clio. Took her to the local garage, guys in there are top notch. They had to replace a defective injector which was causing the hassle. That set me back about 515 euro, but it was worth every penny, as all my issues disappeared afterwards. But to be sure, could you give us more information regarding your car’s mileage, fuel type, and any modifications, if any? This will help us to make more informed suggestions and assist you better. Keep us posted, will ya?

Hey, thanks for your help! Your experience with the Clio gives me both relief and direction. Good to hear a similar problem managed to be fixed in a local garage, I'll keep that option on the table. To answer your question, I am running on a Hybrid engine utilizing Unleaded 95, no particular mods on board. As for mileage, my Arkana has been on the road for about 123138 km. Last maintenance was a pretty standard one with no foreseen issues. Keeping my fingers crossed that a similar solution might do the trick for me as well! I'll keep you updated, cheers!

Hey, thanks for the extra info. Given the mileage and the use of unleaded 95, I think you are still on track with the injector problem. Hybrid engines are notoriously fickle when it comes to fuel mixtures, and an injector can totally mess that up. It could be the cold start injector like you originally thought, or possibly one of the main fuel injectors. If it's not any of those, then maybe the fuel pressure regulator could be going bad. Any of these can cause those exact symptoms you described, and they all kind of work together in the fuel system. Just a thought, but when you take it to your garage, have them check out the entire fuel system, not just the injectors. Given the make and model, and barring it's not some kind of rare, really expensive part you need to replace, I'd say you are looking at something in the 500-600 euro range, not much different than my experience with the Clio. But hey, every car is unique - so take that with a grain of salt. Cheers to hoping for the best! Let us know how it goes.

Thanks for the extensive insights! It's reassuring to know that I might be on the right track with this injector problem. Your pointer about the fuel pressure regulator and checking the full fuel system is an eye-opener, I hadn't considered that. I'll make sure to point this out when I take my Arkana to the garage. It's a bit heavy on the pockets considering the repair cost you've mentioned, but I guess it's better than having daily uncertainties with the car. I appreciate your help, and of course, I'll keep you posted on how the situation evolves. Fingers crossed it's nothing major. Cheers!