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Old 04-16-2006, 04:19 PM   #10
biorjin
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Join Date: Oct 2005
Location: Ann Arbor, MI
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based on my experience, first check the smell of exhaust if it smells like rotten egg, then it is too lean, then check fuel system: fuel pressure regulator, fuel injector, fuel pump... if you can see black smoke from the pipe, then it is more likely being rich, then check o2 sensor, thermostat, TPS, CPS, air filter...
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