Citroen Nemo Misfire

Alright Citroen gurus, need some help! My 2007 Citroen Nemo, gasoline engine, is giving me fits. Only done 34846 km. I'm getting combustion misfires! The check engine light comes on, it's running super rough, jerks like crazy when I try to accelerate, and feels like I've lost half my engine power. I'm thinking maybe it's the fuel pump or injectors? Or could it be an ignition coil thing? I did a quick scan and got the misfire codes but not much else. Any ideas where to start digging?

4 comment(s)

Hey man, sounds rough! I had a similar problem with my old Renault Megane – also a gasoline engine. Check engine light, rough idle, the whole shebang. For me, it ended up being a faulty fuel injector. Have you checked your throttle response? A bad injector can mess that up too.

Throttle response is kinda laggy, yeah. So, how did you pinpoint the injector on your Megane? Did you test them somehow, or just replace them all? And were your symptoms exactly the same? Like, the jerking under acceleration, that's what's really bugging me.

Yeah, jerking was there. I didn't test anything myself to be honest. Took it straight to a workshop. They diagnosed the faulty injector pretty quick. Honestly, unless you have the right tools and know-how, messing with injectors can be a pain. Might be worth getting a professional opinion.

You were spot on! Took it to the workshop as you suggested. Turns out, one of the injection valves/injectors was defective. They replaced it, cleared the codes, and she's running like new! Cost me 515€, but totally worth it to get rid of that misfire. Thanks for the advice!

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