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post #1 of 6 (permalink) Old 07-03-2003, 09:05 PM Thread Starter
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Sounds lean ??

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 ???

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post #2 of 6 (permalink) Old 07-03-2003, 11:28 PM
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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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post #3 of 6 (permalink) Old 07-04-2003, 09:04 AM
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post #4 of 6 (permalink) Old 07-04-2003, 09:10 AM Thread Starter
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I can't hear any pinging or popping and I have no check engine light.
I think he's full of it.

97 LX sport 4.6
T-45 5 speed, 3.73 with track lock; PI heads, 02 MAF, #24 injectors,190 fuel pump,JBAs, 75mm TB. ect,ect.; Aluminium drive shaft. 13" PBR Brakes; Dennis chip, lowered with solid sway bar bushings and hiem joints; console mounted E brake WITH the cup holders; C&l Plenum, Steeda U/D; VERY big radiator; 2.5" duals, Magnaflows;B&M ripper shifter; bla..bla...bla...

Lincoln MKVIII 93.........sweet ride.
Bag-less, lowered.
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post #5 of 6 (permalink) Old 07-04-2003, 05:17 PM
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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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post #6 of 6 (permalink) Old 07-04-2003, 06:02 PM
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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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