vapor lock

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vapor lock

A condition in which a pocket of vaporized gasoline forms in the fuel line of an internal-combustion engine, obstructing the normal flow of fuel.

va′por-lock′ v.

va′por lock`

an obstruction to the flow of fuel to a gasoline engine caused by the formation of bubbles in the fuel.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.vapor lock - a 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)
blockage, stoppage, occlusion, closure, block, stop - an obstruction in a pipe or tube; "we had to call a plumber to clear out the blockage in the drainpipe"
bouchon de vapeur
References in periodicals archive ?
Secondly, the low boil point of methanol leads to high possibility of vapor lock by raising the vapor pressure of methanol-gasoline [12-17].
Vapor Lock: The reason engines don't always restart after a tank is run completely dry is that some fuel system designs may develop a vapor lock in the lines before the switchover to another tank is complete.
The fuel feed system should be constructed so that the fuel is fed in the desired amounts to the intake manifold without serious interruption of flow due to vapor lock.
High evolution of gases during climb can cause decreased pressure resulting in loss of fuel and, when pumping fuel, gas phase separation can occur leading to vapor lock or cavitation problems.
We've been given theories such as vapor lock and boiling fuel, and advice that included clothespins, but I don't feel comfortable betting my safety on clothespins.
To prevent vapor lock in engines taken to high altitude, the ASTM D-910 spec for avgas calls for vapor pressures between 5.
The filling technology creates a vapor lock with carbon dioxide, stopping oxygen from entering the growler.
But it is also liable to evaporation in hot weather, causing vapor lock, where liquid fuel changes to a gas in the fuel lines, and the evaporation contributes to air pollution.
The 620 hypochlorite pump features off-gassing to prevent vapor lock while maintaining +/- 0.
Obviously the heat from the exhaust was causing the gasoline to vaporize in the line, causing a vapor lock.
Features include quick disassembly design for easy cleaning, no valves to clog or vapor lock, and the ability to handle thin liquids.
The cooling lines take in raw water and run it alongside the fuel lines to cool down fuel before it is delivered to the engine, thus preventing vapor lock.