Quote:
Originally Posted by upallnight
Only a few cylinders will have a valve open, so essentially, the other cylinders will be closed tight so the gasoline will have nowhere to evaporate. That's is why the gasoline in your tank don't evaporate overnight.
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If an engine was like a gas tank there would still be compression in those cylinders with closed valves the next day. Also, it doesn't take much of a flooded condition to wash the oil film off the cylinder walls to the point they don't seal. Cylinders are not airtight.