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Calling all mechanics and car enthusiasts: What are the consequences of a lean fuel mix in modern engines?

Jul 15, 2007 by Phil | Posted in Maintenance & Repairs

The car is a 98 Acura 2.3 CL (f22a1 SOHC 4 Cyl).

I installed a fuel controller that allows for a dynamic tuning of the air/fuel mix in preset intervals of the RPM range. It's set for no change at 1000 RPM and steadily decreases to minus

Most of your assumptions are correct. A leaned out engine does in fact run hotter. As far as damaging anything goes, I believe you will invariably end up with burnt valve problems later on down the line. The first thing you should notice is random cylinder

k.t. W | Jul 15, 2007

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