From: kyle@nopussy.net   
      
   L26 engine, low mileage, but 15 years old:   
   When starting in the morning, misfires and spews out white smoke.   
   Pulling off spark plug leads, it appears that the cylinders 5 and 6 are   
   the guilty ones. But once the temperature guage reaches 1/4, the smoke   
   stops and it runs smoothly. So the white smoke usually means coolant   
   from a buggered gasket. Intake manifold gaskets are a common failure on   
   old GM3800 engines. But why only part-time problem? Is it possible that   
   when the engine is hot, the gap in the gasket is closed?   
      
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