Edelbrock Pro Flo 4 EFI
weekend testing update:
I emptied the fuel pump and reconnected to see if the floater and plunger got in place but did not work, still got a stream of fuel out of the vent pipe.
I checked again the old sump fuel pump assembly, and concluded that it should be assembled upside down to make sure the floaters and plunger mechanism is well aligned when installing the case because otherwise they are fully extended during the assembly process and may stay out of place, so I took apart both pumps, and put the new fuel pump into the old sump assembly. The orings were very difficult to install because they were gasoline swollen already, but I put them in the freezer and then added RTV silicone in the cavity to make sure it stayed in place before reassembling since the oring I bought did not fit.
After installing the pump there was no fuel stream comming out of the pipe like before, only a few drops now and then. Seemed to operate normally (, I wonder if this is now normal or should expect absolutely zero drops comming out of there), pressure in the edelbrock application oscillating betewwn 49-52 psi, also no leakage in the back of the car like before. I left it running for several minutes, took it for a short ride and everything looked okay. I took some temperature readings of the pump while operating, with engine warmed up (open hood dough). Checked for pressure build up in the tank, noticed no pressure build up. Attached pics for reference.
Im going to bring the car to work this week, which is a longer ride, to see how it behaves. I still ordered the two-way holley pressure relief valve for the car ventilating pipe, I assume it wont hurt it. The only thing Im not sure of is if it would be a good idea to install it in the trunk compartment where the vent tubes are or if this will make the car interior stink of gasoline all the time. I anyone has installed this on his car and has a location suggestion I'll appreciate it.
weekend testing update:
I emptied the fuel pump and reconnected to see if the floater and plunger got in place but did not work, still got a stream of fuel out of the vent pipe.
I checked again the old sump fuel pump assembly, and concluded that it should be assembled upside down to make sure the floaters and plunger mechanism is well aligned when installing the case because otherwise they are fully extended during the assembly process and may stay out of place, so I took apart both pumps, and put the new fuel pump into the old sump assembly. The orings were very difficult to install because they were gasoline swollen already, but I put them in the freezer and then added RTV silicone in the cavity to make sure it stayed in place before reassembling since the oring I bought did not fit.
After installing the pump there was no fuel stream comming out of the pipe like before, only a few drops now and then. Seemed to operate normally (, I wonder if this is now normal or should expect absolutely zero drops comming out of there), pressure in the edelbrock application oscillating betewwn 49-52 psi, also no leakage in the back of the car like before. I left it running for several minutes, took it for a short ride and everything looked okay. I took some temperature readings of the pump while operating, with engine warmed up (open hood dough). Checked for pressure build up in the tank, noticed no pressure build up. Attached pics for reference.
Im going to bring the car to work this week, which is a longer ride, to see how it behaves. I still ordered the two-way holley pressure relief valve for the car ventilating pipe, I assume it wont hurt it. The only thing Im not sure of is if it would be a good idea to install it in the trunk compartment where the vent tubes are or if this will make the car interior stink of gasoline all the time. I anyone has installed this on his car and has a location suggestion I'll appreciate it.