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What would cause a car engine not to burn fuel properly?

Updated: 4/28/2022
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StellaMaeMiller

Lvl 1
11y ago

Best Answer

Poor air/fuel mixture, due to clogged/faulty injector/ bad mass-air,O2 sensor/(fuel pressure-very important on DI engines).

Poor spark- due to fouled/old spark plugs, bad ignition wires/coil.

Poor compression psi, or carbon buildup.

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11y ago
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Q: What would cause a car engine not to burn fuel properly?
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