2014 Nissan Qashqai Exhibiting Black Smoke, Poor Fuel Economy, and Startup Issues: Suspected Faulty Cold Start Injector

Hey, sounds like a rough one for your Qashqai there, and your description certainly rings a bell for me. I've got a 2011 Nissan Juke and had a fair bit of the same issues a while back. It's a real pain when you get nothing but black smoke and a reluctant engine, I get it. I did have a hunch at the time it could be the injectors, turns out I wasn't far off. Upon getting it checked, my mechanic confirmed the issue was indeed due to a faulty cold start injector. The engine wasn’t getting the right amount of fuel it needed, and that was messing pretty much everything up; mix of fuel and air in the engine, burning off that extra fuel (black smoke outta the exhaust), hard starts and even those unexpected engine shut-offs. Just to set your expectations, it entailed some significant work to get the injector sorted and a proper job’s vital to avoid more problems down the line. First up, they tested the defective injector to confirm it wasn’t providing the correct amount of fuel. Then the process moved onto the removal of the faulty injector and replacing it. Lastly, they did a thorough cleanup of the fuel system to ensure no remnants from the faulty injector caused any further issues. It wasn’t a quick-fix issue, but once done, my Juke has been running as smooth as silk. Point being, I reckon you’re on the right track suspecting the injector, worth getting it assessed properly by your mechanic. Passion breeds patience they say, we just gotta hang in there, huh?

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Hey there, sounds like you really rode the mechanical rollercoaster with your Juke! On the bright side, good to know your car made a solid comeback after all that tedious work. Thanks for the details, it's making a lot of sense and it looks likely that my stubborn old Qashqai is following the same path. I'm curious, do you recall how hefty the repair bill was for getting that faulty injector fixed up? It's always nice to have some sort of ballpark figure in mind before I have that chat with my mechanic again, you know how it is. Also, since the repair has anything else popped up? Or has your Juke been behaving itself since then? Any info is gold at this point, so I appreciate it. Stay safe on the roads!

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Hey there, yeah, I hear you! A bit of a heads-up on repair costs is always handy before a face-to-face with the mechanic, isn't it? So, about the cost of getting that dodgy injector sorted... It set me back around 515€, all in. It wasn't easy on the wallet, I admit, but considering the frustration it saved me in the end, it was worth every penny. And on the bright side, since the injector deal, my Juke's been an absolute dream. Not a single problem since then. After a thorough job on the cold start injector, the beast's been purring beautifully every morning - no black smoke, no cutouts, nada. Goes to show, you get a good mechanic to handle it all, and you're set! Keep me in the loop on how it goes with your Qashqai, alright? Wishing you smooth rides and clear roads!

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Thank you for the insights, my friend! That feedback helped me gain some significant ground, and while the estid cost does seem a bit high, I agree it’d be worth resolving all those frustrating troubles. I appreciate you sharing your journey; it's comforting to hear about your Juke's successful recovery. It gives me hope for my Qashqai. I'll definitely take your advice and find myself a skilled mechanic to handle this one. Once the repairs are done, I'll be sure to share how it all went down. And hey, happy to hear your ride's been doing well. Here's to smooth rides for both of us! Cheers, and stay safe on the road!

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