1994 chevy silveradoDecember 6, 2011started smoking a few day ago blue looking smoking is the engine gone Keywords:blue smokeengine 1 thought on “1994 chevy silverado” Kristen December 6, 2011 at 5:53 pm What does Blue Exhaust Smoke mean? Blue smoke is created by the vehicles engine oil entering a cylinder and being burned along with the Air/Fuel mixture. A small amount of oil leaking into a cylinder will create blue smoke out the tailpipe. Blue smoke is more often and issue in older or higher mileage vehicles. Sometimes using a thicker oil can help, but in most cases replacing the failed gaskets and seals is the best way to insure the issue is fixed. http://www.freeautoanswers.com/bluesmoke.html Comments are closed.