Advertisement Video Diesel Exhaust Smoke Colors ByGreg Jones on Dec 8, 2020 Close Video Watch Video Distraction Free Advertisement There’s three most-common colors for diesel exhaust smoke – black, white and blue. They all mean something different in regards to your diesel engine’s operation. Brought to you by AMSOILAdvertisementClick Here to Read MoreAdvertisement Advertisement In this article:AMSOIL, diesel, exhaust Video: Sonny’s 820 cid EFI Marine Engine Video: Don’t Drop That Valve Video: Valves, Retainers, Keepers & Locks Video: Understanding Valve Springs – Part 2 Advertisement VIDEOS Watch Engine Builder's latest discussions and explanations. SHOP Shop the latest Engine Builder merchandise. SUBSCRIBE Stay up to date by signing up for the Engine Builder newsletter.