Quote:
Originally Posted by Bill Adkins
Newer engine fuel management systems make the color evaluation to a degree inaccurate. Actually a full load run on a chassis dyno with shutting the engine off while coasting down from speed will give a good indicator but casual driving won't reveal as accurate indication.
Bill
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That's true, but only if the vehicle is operating within acceptable LTFT limits. Once engine management has maxed out it's long term fuel trim one way or another, looking at the plugs will still be a valid indicator, especially if it's an extreme condition.
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A.S.E Tech A1,A6,A7,A8 & MVAC 609 + EPA 608
Unless stated otherwise, any question I ask is about my greymarket 1985 380SEL.
