Cheers, I will have a look. Basically I'm increasing the hose size because of running Veg oil. The fuel heating is done in the engine bay (when the coolant is warm), so will still be thicker than standard diesel (even blended with RUG) in the fuel tank and fuel lines. The lines look to be 6mm standard which isn't very big really.
In the cold weather approaching 4500rpm I can feel it intermittently holding back on veg (not on dino) - only since I've turned the fuel up, so that tells me that the lift pump (in the VE) is struggling somewhat. Larger fuel lines should help that considerably (hopefully eliminate it). Failing that I might look into a Facet pump.
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