chevy truck help needed

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  #1  
Old 10-06-09, 06:09 PM
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Join Date: Sep 2004
Location: usa
Posts: 211
chevy truck help needed

94 chevy truck 5 speed, vortec 4.3 v6 engine.

truck is running rich, has new air filter, plugs.
What can be causing this ???
 
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  #2  
Old 10-06-09, 06:38 PM
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Join Date: Sep 2009
Location: tulsa, ok
Posts: 48
1st what has lead you to the "running rich" conclusion?
check engine light on?

things to check;
map sensor, o2 sensors, fuel pressure regulator
 
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