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D16 running rich

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  #1  
Old 04-11-2012, 06:43 PM
jaconstable74's Avatar
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Default D16 running rich

my engine is running rich, bumper is black. how do i fix?
 
  #2  
Old 04-12-2012, 05:56 AM
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Do you have a cat converter on the car? CELs?
 
  #3  
Old 04-12-2012, 06:41 AM
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Oil smoke will also make the bumper black. What color smoke comes out the tail pipe, and when does it smoke worst?
 
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