Brother and Sister Raccoons:
I had a thought yesterday on the previous thread of the pressurized fuel
tank. Here's my theory:
All fuel pumps have a check valve on their output side. If the check valve
leaks, then when the car is shut down fuel from the pressurized fuel line
leaks backward, through the fuel pump and back into the tank. The pressure
in the tank has no place to go, so each time the car is started and shut
down, pressure accumulates. Also, this process causes pressure in the fuel
line to drop as the car sits. On a very hot day, the pressure may get low
enough that the fuel in the line will begin to vaporize. Then when the car
is started and the pump begins running, the fuel in the line, full of
bubbles, will get pumped back into the tank through the regulator, making a
gurgling sound as the bubbles get pumped back into the tank. Don't know if
it's the culprit, but it is a possibility.
Rich Wagner
Freshly Unemployed in Montrose, CO, USA
'82 GTV6
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