Quote:
Originally Posted by Benz Dr.
Any lessening or obstruction of flow will cause fuel to pick up heat and possibly vapor lock.
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Quote:
Originally Posted by bracurrie
I thought vapor lock was an all or nothing condition, kinda like being a little bit pregnant  .
Thanks! |
The vaporization of fuel in the fuel
supply system can occur when ambient pressure in any portion of the system falls below the vapor pressure of the fuel. That vaporization of the fuel may cause fuel flow to cease ("vapor lock").
When the system is pressurized above the fuel vapor pressure, vaporization of the fuel, and any hazard of "vapor lock" is eliminated.
By locating a fuel pump adjacent to, or within the fuel tank, and below the level of fuel in the tank, the supply system is kept pressurized above the vapor pressure of the fuel, and the conditions for "vapor lock" substantially eliminated.