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I'm not sure that I understand vapor lock completely. Is the problem that the fuel gets hot, or that the fuel boils and then the pumps no longer work?
I have a plan for a stone cold simple fuel system. With only one tank positioned high, I plan to put both fuel pumps directly under the tank which is located behind the cabin (tractor configuration). Position the fuel regulator beside the pump, and I will only having a single line running out to the engine compartment. Think of it as one LONG header. The issue will be that the fuel will not 'circulate'. What goes out to the header at the engine will stay there till it gets used.
Is this a prescription for 'vapor lock', or will any boiling fuel simply get blown through the injectors?
fuelSystem.jpg
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