Re: Running too Lean?
Reading plugs can be a bit tricky. To do it correctly you need to install fresh plugs, run the engine up to a higher rpm under load and then shut off the power and pull the plugs. Just running them and then looking at them will tell you some information such as oily, sooty, tan, etc, but to really use plugs to read A/F ratio data it requires going through the correct check procedure.
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