electric fuel pump
Cross-Country
Joined: Jul 2021
Posts: 55
Likes: 34
From: Camrose canada
the fuel pickup is part of the sending unit. it is a metal tube that goes close to the bottom of the tank, then has some type of a filter element on it.
the fuel return is usually part of the sending unit assembly too. a pipe that just returns unused fuel back into the tank.
the fuel pump draws fuel out of the tank through the pickup tube, sends it to the diesel injection pump, which then sends it out to the injectors. on top of each injector is a return rail system that collects the unused fuel and returns it back to the tank.
the fuel return is usually part of the sending unit assembly too. a pipe that just returns unused fuel back into the tank.
the fuel pump draws fuel out of the tank through the pickup tube, sends it to the diesel injection pump, which then sends it out to the injectors. on top of each injector is a return rail system that collects the unused fuel and returns it back to the tank.
Mountain Pass
Joined: Apr 2020
Posts: 189
Likes: 25
Yeah don't do that. It won't help at all. Buy one good e-pump and run fuel line from the pickup to the e-pump. There are push and pull type pumps. Adding a second pump might seem like a good idea, but if one fails it isn't guaranteed to not inhibit the other pump. Mount a ~$100 facet lift pump and attach it to the tank with $15 of hose and you won't have problems.
Perhaps a different/supplemental take on the pickup unit: Two tubes going into the tank, one facilitates the lift pump sucking from the bottom of the tank. The other facilitates dumping unused fuel from the injectors back to the top of the tank (by bottom and top I mean relative to the internal fuel level). Has a fuel level sensor/sender incorporated.
You could theoretically accomplish the same thing by manually pushing a feed and return line into separate holes you drill into the tank while using the current pickup/sending unit to feed the dash gauge (not advised).
Perhaps a different/supplemental take on the pickup unit: Two tubes going into the tank, one facilitates the lift pump sucking from the bottom of the tank. The other facilitates dumping unused fuel from the injectors back to the top of the tank (by bottom and top I mean relative to the internal fuel level). Has a fuel level sensor/sender incorporated.
You could theoretically accomplish the same thing by manually pushing a feed and return line into separate holes you drill into the tank while using the current pickup/sending unit to feed the dash gauge (not advised).
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