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Re: FAILED Emissions Test...
Rich exhaust could be a number of things.
Bad o2 sensor (maybe)
Fuel pressure regulator
high engine temp/bad sensor
Fuel injector stuck open
High NOx
bad or dying Cat
too much ign advance
high engine temps
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83 - Porsche 944 - daily driver
62 - VW Karmann Ghia - never ending restoration project
95 - Ford Mustang - wifes
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