rolandlion95

Nissan NV Engine Knocking

My 2017 Nissan NV with a gasoline engine is knocking. It has about 170,120 kilometers. The engine has reduced power and jerks during acceleration. There's also visible smoke from the exhaust when accelerating. I scanned it and found an error code, but haven't checked it yet. Could it be deposits in the combustion chamber?

A 2017 Nissan NV with a gasoline engine is experiencing knocking, reduced power, jerking during acceleration, and emitting black smoke from the exhaust. These symptoms suggest possible causes such as deposits in the combustion chamber or incorrect ignition timing. A similar issue was resolved by diagnosing carbon buildup and performing a professional cleaning of the combustion chamber. It is advised to consult a mechanic to prevent further damage.

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4 comment(s)

I own a Nissan NV too. Your description sounds like a problem I had. Have you checked the ignition timing? Incorrect timing can cause knocking. What color is the smoke black, blue, or white? What's the error code?

I haven't checked the ignition timing yet. The smoke is darker, maybe blackish. I'll check the error code soon. What was your experience with a similar issue? How did you resolve it?

Black smoke suggests incomplete combustion, pointing to deposits or timing. My knocking got worse. Fuel additives had minimal effect. A workshop diagnosed carbon buildup and recommended professional cleaning. Given the potential damage, especially with 170,000 km, I'd avoid driving it and consult a mechanic.

Thanks for the advice. I'll schedule an appointment with a workshop for diagnosis and repair. Professional cleaning of the combustion chamber resolved the knocking. The total repair cost was 425€.

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NISSAN

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