vapour lock

A form of vapor lock — A problem mostly affecting gasoline-fueled internal combustion engines, where the liquid fuel changes state from liquid to gas while still in the fuel delivery system, reducing the pump pressure and causing transient power loss or complete stalling.

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Meanings

nounvapour lock (countable and uncountable, plural vapour locks)

plural vapour locks

  1. alternativecountableuncountableAlternative form of vapor lock.

Synonyms & antonyms

nouna stoppage in a pipeline caused by gas bubbles (especially a stoppage that develops in hot weather in an internal-combustion engine when fuel in the gas line boils and forms bubbles that block the flow of gasoline to the carburetor)

Similar
vapor lock
Broader
blockageblockclosure
Also see
vapor lock

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

vapour lock. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/vapour%20lock

MLA

“vapour lock.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/vapour%20lock. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “vapour lock,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/vapour%20lock.

Source: vapour lock on Wiktionary, CC BY-SA 4.0.