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Re: 7.3 fuel pressure regulator issues
The o-ring damage looked more like the material was torn, not softened or swollen from solvent reaction. I've only used a little biodiesel but hundreds (thousands?) of gallons of heated WVO.
I'm thinking the damage is from dirty fuel as the fuel return exits the filter housing before it is filtered.
I agree that some debris seems to have gotten in the spring/seat of the pressure regulator. New spring and seat... no problems since.
Todd
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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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