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vapor lock

an obstruction to the flow of fuel to a gasoline engine, caused by the formation of bubbles in the gasoline as a result of overheating. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for vapor lock
  • If the vehicle is losing power, has a rough-running engine or will not start, it may be experiencing vapor lock.
  • vapor lock, engine or transmission overheating, or radiator boil over can all be caused by long steady ascents.
  • In addition, when the weather is hot, suction pumps are subject to vapor lock.
  • It also indicates the tendency for vapor lock in the engine.
  • If the problem is vapor lock, this may take care of it.
  • There was a dead battery and a vapor lock in extreme heat.

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