Quote:
Originally Posted by Aruba1
After watching the video I am even more confused. Does anyone know how much pressure is in the return line and when does this pressure kick in? Based on the video it sounds like there is constant flow and it doesn't make sense. There should be some pressure (1 or 2 PSI at the most?) but not a lot and definitely not constant. Or can the return line see as much pressure as the pump can put in some unique situations?
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When youre going down the road and let completely off the gas, the injectors are not using nearly as much fuel, and with the pump running constantly, the extra fuel has to go somewhere, that's what a return is for. There will be a considerable ammout of fuel returned to the tank during normal driving.