How do you know a car is running too rich?

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Old 11-03-2003, 05:54 AM
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How do you know a car is running too rich?

Any home tests, or indications that could be used to tell?
Old 11-03-2003, 06:00 AM
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looking at the exhaust tips for more discoloration.
Old 11-03-2003, 06:05 AM
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The check engine light will illuminate in modern OBD 2 equipped vehicles.

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Old 11-03-2003, 07:51 AM
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checking the black shit on the exhaust
Old 11-03-2003, 08:04 AM
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What do you mean by "too rich"?
Old 11-03-2003, 08:30 AM
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too rich means too much fuel for the amount of air going into the engine. Too lean is the opposite, too little fuel for the amount of air going into the engine. Being lean is more dangerous than being rich. Being lean will cause higher exhaust gas temps. But being too rich can cost you power.
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