"One-way" fuel line valve..?
Ok, I tried a check valve, and the result isn't very probant.
I installed a pressure gauge onto the fuel line (just between the rigid line and the fuel filter) and the pressure with the engine running is good : 5 psi.
But when I shut the engine, the pressure goes down from 5 to 0 in a one minute delay.
If the fuel pump has integrated check valves, is this pressure drop normal?
Another question : my fuel pump has a vacuum port, directly connected to the carb. Is it an ECS requirement (my Demon is an ECS equiped car)..? What's the purpose of this vacuum port?
:thankyou:
Ok, I tried a check valve, and the result isn't very probant.
I installed a pressure gauge onto the fuel line (just between the rigid line and the fuel filter) and the pressure with the engine running is good : 5 psi.
But when I shut the engine, the pressure goes down from 5 to 0 in a one minute delay.
If the fuel pump has integrated check valves, is this pressure drop normal?
Another question : my fuel pump has a vacuum port, directly connected to the carb. Is it an ECS requirement (my Demon is an ECS equiped car)..? What's the purpose of this vacuum port?
:thankyou: