Word forms: (regular plural) lean mixtures
nounRelated wordsCompare lean mixture with the following words:rich mixtureenrichment (Automotive engineering: Fuels, oils, emissions, and other fluids) A lean mixture is a fuel/air mixture containing a relatively low proportion of fuel.
⇒ A lean mixture can be caused by too little fuel or too much air. ⇒ Too much oxygen indicates a lean mixture and the need for less fuel. ⇒ An overly lean mixture will cause the engine to hesitate and probably backfire through the carburetor.
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