White smoke from exhaust on startup then goes away. Jan 4, 2026 · Quickly diagnose white exhaust smoke on startup. Find out if it's condensation or a sign of a more serious problem. What causes white smoke from exhaust on startup after 4 hours in a 2007 4x4 1kd Hilux? Nov 26, 2023 · Cleaned the system, replaced sensors. This happens when hot exhaust gases meet the cold outside air, creating steam. Since this isn’t something that frequently happens, our team decided to give you an overview of the issue, as well as potential reasons. Post some more detailed information here and do an overhead adjustment and EGR tuneup, then start working your way back along the exhaust. It’s especially common in colder climates and usually goes away after a short drive as your engine warms up. Another may be that a leaking head gasket is causing the coolant to be consumed by the engine. Dealer is changing the oil and said they will go from there. This book has a lot of information about reasons, treatments, and maintenance. vhgfh ncbl ykcv irb nav dfyo njq qcrtin aws yqgr