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ludwig_blitz6

Navara Rough Engine Running

Hello, I have a 2000 Nissan Navara with a diesel engine. Recently, I've been experiencing some really rough engine running. The check engine light keeps popping on, and when I had it scanned, it showed an error stored related to 'reset quantity drift compensation'. I suspect it's something to do with the fuel injection. I've read that a likely cause is a defective injection valve or injector. My Navara has 164186 km on the clock. Has anyone dealt with this before? Any ideas on what to check or how to proceed? It feels like the engine is stumbling, like it's not getting fuel smoothly, a bit like a dodgy tap that only lets out water in spurts.

Summary of the thread

A 2000 Nissan Navara with a diesel engine was experiencing rough running and a check engine light, with an error related to 'reset quantity drift compensation.' This issue was suspected to be linked to the fuel injection system, possibly due to a defective injection valve or injector. The suggested solution involved professional diagnosis and replacement of the faulty injector, which resolved the rough running and cleared the check engine light.

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4 comment(s)

linaphoenix31

Hey there, I had a similar issue with my old BMW 320d a few years back. Rough running, check engine light, and some weird error code about fuel trim. In my case, it turned out to be a faulty injector. The 'reset quantity drift compensation' sounds like the ECU is trying to adjust for an injector that's not delivering the correct amount of fuel. Have you noticed any black smoke or a drop in fuel economy? It's kind of like when your eyesight starts to go blurry, and your brain tries to compensate, but eventually, you need glasses (or in this case, a new injector!).

ludwig_blitz6 (community.author)

Thanks for the reply! I haven't really noticed any black smoke, but the fuel economy might be a bit worse than usual, hard to say for sure. So, if it's an injector, is there anything I can check myself, or is this something that really needs a professional to diagnose? Like, is there a simple test I can do, similar to checking the tire pressure, or is it more complicated?

linaphoenix31

Honestly, diagnosing a fuel injector issue accurately usually requires specialized equipment. You could try listening to each injector with a stethoscope (or a long screwdriver as a makeshift version) to see if one sounds different from the others, but that's not very reliable. Injector testing involves measuring the fuel delivery rate and spray pattern, which is best done with a proper injector testing machine. I'd recommend taking it to a workshop. They can pinpoint the faulty injector and replace it. It's like trying to fix a watch with a hammer – you might get lucky, but you're more likely to break something else!

ludwig_blitz6 (community.author)

Thanks for the advice! I appreciate you sharing your experience. I took it to a mechanic, and you were right – it was a faulty injector. They replaced it, and the rough running is gone, and the check engine light is off. The total cost was 515€, which is a bit painful, but at least the Navara is running smoothly again. Thanks again!

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NISSAN

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NAVARA