JHZR2,

Yes the original fuel pump is part of the injection pump. It will pull fuel from what ever it is connected to.

The injection (IP) pump has an over pressure valve that opens to regulate the fuel pressure in the pump. I don't know what that pressure is but you might be able to measure the fuel pressure between the secondary fuel fliter and the IP to find out. Then I would set the lift pump to a pressuer of maybe 1 or 2 PSI greater than the regulated IP fuel pressure to keep a constant flow of fuel like the original fuel pump does.

It would probably be best to mount your new lift pump near the fuel tank so it is pushing the fuel thru the fuel line because of the higher viscosity of the WVO.

P E H