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What will keep your diesel from going through the heads and into the Veg tank? If by Vegistroke style, does that mean the old way of check valves in the manifold prior to the heads?
As I understand your drawing, the FPR on the WVO side will probably be set at a higher pressure, say 75psi. The stock regulator is usually around 50psi. That means when you run on diesel, the heads will have trouble getting enough pressure to the injectors in that the FPR on the outlet side will be dumping it all out the back.
I'd add a three port solenoid valve after the fuel leaves the heads and just split the flow to the respective tanks... diesel when on diesel, WVO when on grease. This should be before it goes through the WVO pressure regulator.
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2002 F-250 Lariat, PSD, CC, short bed, 3.73, auto tranny, Line-X bed liner, AFE Filter, HX crossover, intake heater delete, Evans NGC+, Dieselsite 203 thermostat, coolant filter, Amsoil by-pass filter, Schaeffer's synthetic blend tranny fluid, Bob Riley's tranny filter, Velvet Ride shackles, Rancho 9000 shocks with in-cab adjustment, 60 gallon aux tank for burning heated WVO, burning veggie since fall of '04.
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