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Citroen C6 rich running issue

My 2007 Citroen C6 diesel is running way too rich. Power is down, check engine light is on, engine runs rough, and fuel consumption is way up. It also jerks when accelerating. It has 195370 km on the clock. Could it be a bad injection valve or injector?

A 2007 Citroen C6 diesel is experiencing a rich running issue, characterized by reduced power, a check engine light, rough engine performance, increased fuel consumption, and jerking during acceleration. The problem may be due to a faulty fuel injector, as similar symptoms were resolved by replacing the injector in another case. It is recommended to have the injectors checked by a professional workshop for accurate diagnosis and repair.

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4 comment(s)

I also drive a Citroen C6, though not the same year. Your symptoms sound familiar to a problem I had. Have you checked the spark plugs or the air filter recently? A clogged filter can cause the engine to run rich, and faulty spark plugs definitely won't help.

Thanks. I haven't checked the spark plugs yet, as mine is a diesel. I replaced the air filter roughly 20000 km ago. What was the problem in your case?

Ah, sorry, I missed the diesel part. In my case, it was a faulty fuel injector. The increased fuel consumption and rough running were the key indicators. I'd advise getting the injectors checked by a workshop; it's not easily diagnosed without the proper equipment. The repair cost about 515€, but it solved the issue completely.

I appreciate your help! I'll get the injectors checked at a local workshop ASAP. It's good to know what to expect. Thanks!

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CITROEN

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