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bad or misreading MAP or MAF sensors, bad ECT sensor, bad TPS sensor, stuck open fuel injector, or problem with fuel system, faulty parameters set in ECU or bad ECU.

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Parker Kiehn

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โˆ™ 2022-05-10 14:45:48
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Q: What causes the air fuel mixture to become too rich?
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What causes black smoke coming out of a car?

The most probable cause is combustion of a rich mixture of fuel.


What causes a car to make Black Smoke?

to much fuel. gm jim Fuel to air mixture too rich or choke stuck on.


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A rich condition.


What causes the air-fuel mixture to become too rich?

bad or misreading MAP or MAF sensors, bad ECT sensor, bad TPS sensor, stuck open fuel injector, or problem with fuel system, faulty parameters set in ECU or bad ECU.


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High CO is a rich air/fuel mixture. Nothing else.


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Usually when a Catalic Converter becomes unusable, it is usually caused by a enriched fuel system. The rich fuel mixture causes the internal catalyst to become they usually generally melted down inside. This excessive heat is built up when the engine is running in a "too rich fuel mixture". After the converter has been replaced, the automobile should be taken to a repair facility, and have them connect their electronic control monitoring equipment to your on board computer, so the reason for the enriched fuel mixture can be determined and repaired.


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