Mailbag: What Does Carbon on Exhaust Tips Mean?
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re diagnosing carbon deposits on an exhaust system and resolving a rich air/fuel mixture. J.K. • Mountaintop, PA Q: My 1970 Buick Skylark has a 350 Buick engine, a 350 turbo/hydro-automatic transmission, and a Chevelle 12-bolt posi rear-end. I
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