vapor lock
vapour lock

This is the primary reason that vapor lock is rare in modern fuel systems.

The fuel in the line near the engine does not move and can thus heat up sufficiently to form a vapor lock.

Gravity feed fuel systems are not immune to vapor lock.

The higher the volatility of the fuel, the more likely it is that vapor lock will occur.

By then Ken's pickup had developed a vapor lock and wouldn't start.

They're designed with a vapor lock, no oxygen can get down there, so no fire.

If he didn't get to the root of it, do something to heal himself, he was headed for vapor lock.

Therefore, vapor lock is almost never a problem in a vehicle with fuel injection.

High temperature fuel may also result in a vapor lock, which is unrelated to flooding but has a similar symptom.

For the same reason, diesel engines are immune to vapor lock.