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Failed Emissions Test

  #1  
Old 11-30-2006, 10:22 PM
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my vehicle failed the high speed emissions test. the hc and co were high during the high speed portion, and i need to know what i can do (other than put it in the shop) to fix it. is there a certain part or parts that need to be replaced? oh yeah...the smell of the exhaust is rich, someone please help me.

thanks

 
  #2  
Old 11-30-2006, 10:33 PM
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What model and what size engine is it?
 
  #3  
Old 11-30-2006, 10:39 PM
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it's a 1994 trooper....don't know what model...i have the vin number...all i know is that it's a regular trooper with a manual tranny and 4 wheel drive...power everything....heated mirrors.....and a 3.2 dohc i think


 
  #4  
Old 11-30-2006, 10:50 PM
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When did you last tune it up? It could be a number of things it could be a bad sensor Wrong grade of fuel or just the wrong inspector.
 
  #5  
Old 11-30-2006, 10:51 PM
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i just got it and the inspection is due. i did an oil change..i'm going to change the plugs tomorrow, and i use regular 87 octane gas...is there an additive i can use that will clean the emissions?
 
  #6  
Old 11-30-2006, 11:27 PM
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I would give it a real good tune up. Plugs (wires if they are over due) fuel filter. And as the additives the only thing I can think of is injector cleaner I would go with a better brand and not a store brand.
 
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