milathunder2

C70 diesel rough idle and poor starting

My 2012 Volvo C70 diesel with 129465 km has developed a problem: it now starts poorly, fuel consumption is up, and engine power seems reduced. Additionally, the car idles unevenly and has stalled a few times. Could a dirty injection valve be the cause?

A 2012 Volvo C70 diesel is experiencing rough idling, poor starting, increased fuel consumption, and reduced engine power. The issue may be related to dirty or clogged fuel injectors, potentially causing misfires. A workshop visit is recommended for a proper diagnosis and to check the injection nozzles, as cleaning or recalibration might not suffice.

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4 comment(s)

That does sound familiar! I also drive a C70 with a diesel. Did you notice any misfires or perhaps black smoke? Is it possible the fuel injectors are clogged?

Thank you for your response. I haven't noticed any black smoke, but misfires may be present. Is injector replacement potentially the only solution?

Replacement might not be necessary, but cleaning or recalibration rarely works. I ended up having a defective injection nozzle, causing almost the same problems. I'd recommend a workshop visit, as diagnosis can be tricky.

Thank you. It seems I will take your advice and visit a workshop to have the injection nozzles checked. I appreciate the insight.

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VOLVO

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C70