Mercedes-Benz W220 CDI smokes black and lacks power - injectors
400 CDI320 CDI
Why does the W220 CDI smoke black and lack power?
The cause can be a faulty injector, for example a cracked injector body, or a leak in the turbo air hose, which leaves too little air for combustion. An internal leak in the high-pressure pump has also caused smoke and consumption. Read the fault codes before replacing parts.
How is the correct injector for the W220 CDI identified?
On top of the injector's solenoid there is an easily visible number series that tells which injector can be used. There is some compatibility between the number series, so check the number before ordering.
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