[DML] Re: Failed emissions: NOx

["hawaiid_ro" <robinsonl002@xxxxxxxxxxxxx>]

--- In dmcnews@xxxxxxxxxxxxxxx, deloreanernst@xxxx wrote:
> Never had any emissions problems before with my D, but a week ago 
I failed 
> for NOx. The usual culprits, I'm told, are the lambda sensor or 
the cat. conv. 

High NOX counts usually means combustion chamber temperature is too 
hot.  Could be a simple matter of cleaning injectors or changing 
spark plugs to a lower heat range.  I believe if the "cat" is shot, 
your hydrocarbon count (raw fuel vapor) would be high.  Its job is 
to heat up and burn any raw fuel not burned in the combustion 
chamber.
> 
> 
> [Non-text portions of this message have been removed]




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