Wanting to do this on a c mechanical with FASS on it and on an Acert that has been 6nz'd. Done it with clear hose strung up over mirror bracket. That was on a b mechanical but I can't remember how I plumbed it. Do you just unhook return off top of injection pump and plumb the clear hose inline there? I know there is a restriction orifice in the Male jic fitting there. Seems like that could cause bubbles?
What about the C15? Where do you plumb clear hose into on it? Changing all lines from tanks forward and have fuel sweeping at splitter and lines are damp with fuel. Would like to compare before and after. The C15 has a rough running flutter in it that no one has cured in 200k miles. Did it when it was an Acert with compounds and still after inframe with industrial cyl packs, 6nz head, 1496988, etc,etc. Fuel lines are one of the only things left common before and after.