TWeatherford
Full Access Member
My truck currently has a scarily small electric fuel pump feeding the motor. I have bought a stock fuel pump because of its robustness, particularly pumping vegoil which I will be doing soon. Electric fuel pumps simply aren't reliable pumping vegetable oil unless you spend big money on them (around $600) according to my research. However, I love the idea of being able to run an electric pump to feed the motor in the inevitable even of air intrusion, letting the little pump work instead of cranking the whole V-8 over to do so.
Here is my idea. The fuel lines will head toward the two pumps (stock mechanical and electric) and split into two lines. They will go through their respective pumps, then back together and on to the IP. The mechanical pump will do 99% of the work, I'll have a switch in the cab to use to prime lines, or could even run with it in the event of a mechanical pump failure. I figure I'd need a check valve on the IP side of each pump, to prevent pressurized fuel from running backward through the electric pump (which may not even be possible, I dunno) or if it was a failed stock pump I don't want to be filling my crankcase with diesel. Does this setup make sense? I think it would give me the longevity of the mechanical pump, with the convenience of the electric pump.
Another question I have is where to get check valves. I've heard talk of them but never used or even seen one. I looked at mcmaster and didn't see anything that looked like it would work. Would NAPA have something that would work for me, something that would just install in the 3/8 fuel line?
Here is my idea. The fuel lines will head toward the two pumps (stock mechanical and electric) and split into two lines. They will go through their respective pumps, then back together and on to the IP. The mechanical pump will do 99% of the work, I'll have a switch in the cab to use to prime lines, or could even run with it in the event of a mechanical pump failure. I figure I'd need a check valve on the IP side of each pump, to prevent pressurized fuel from running backward through the electric pump (which may not even be possible, I dunno) or if it was a failed stock pump I don't want to be filling my crankcase with diesel. Does this setup make sense? I think it would give me the longevity of the mechanical pump, with the convenience of the electric pump.
Another question I have is where to get check valves. I've heard talk of them but never used or even seen one. I looked at mcmaster and didn't see anything that looked like it would work. Would NAPA have something that would work for me, something that would just install in the 3/8 fuel line?
