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Discussion Starter #1
I took a mecahnic friend of mine for a ride today and he said at higher RPMs my car sounds lean. I didn't want to look dumb so I didn't ask him what "lean" sounds like.
Can you realy tell a engine is running lean by just listening to the exhaust ???

Thanks.
 

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you should listen to the engine. Lean pretty much means not enough gas, or too much air is coming into the engine. Have an engine light lately? Get the code read at AutoZone.

"Lean" should have a rattle or knocking to it.
 

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Discussion Starter #4
I can't hear any pinging or popping and I have no check engine light.
I think he's full of it. :bs:
 

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No, he may not be full of it...a rich running engine has soft, slightly muffled
exhaust pulses that blend slightly into each other. Some have descried the
sound as "feathery"....whereas a lean running engine's pulses are are shaper,
more seperated sounding, and more individually distinct.
 

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if its not throwing a code doesnt that mean its leanness is within the limits of a normal runing engine?
 
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