Pulled my spark plugs for the first time since purchasing my car and its initial tune up. The plugs were white as new. With the use of unleaded gas, do the plugs turn darker as they did with leaded gas? (yup, its been some time since I tinkered with cars when I was younger) I am assuming that I'm running a bit on the leaner side. If this is so can anyone tell me what the stock jet size is on a 600cfm? I figured that I'd get a baseline here and buy a few sets of jets to try this weekend. Thanks
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Aloha from Hawaii
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