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A rich-running engine in a 1997 Dodge Neon can be caused by several factors, including a malfunctioning fuel injector, a faulty mass airflow sensor, or a defective oxygen sensor. Additionally, issues with the engine's air intake system, such as a clogged air filter, can contribute to an improper air-fuel mixture. The smell entering the driver's compartment may also indicate a possible exhaust leak, which should be addressed to ensure safety and proper vehicle operation.

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1mo ago

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What is cold when it is running and smells when its not?

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because of the exhaust


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You are probably leaking anti-freeze


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If you have a motor other than the car such as a lawn mower in the trunk it smells. Also if you just got gas it smells.


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take off the E-brake dumb@$$


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Could also be that your car is running to hot (over heating). This can sometimes be mistaken for electrical wires being overloaded , and getting to hot. Check thermostat, and condition of coolant....


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It probably smells a bit of oil when running but any smell of burning is a sign that something is wrong and it is liable to catch fire.


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