I have a 2004 with 65k miles, 6MT, and I installed a Series II fuel pump assembly about 10 months ago. The Series II pump assembly was purchased off of Ebay and was used. Within two months of installing the pump assembly, I needed to replace the fuel filter sock after experiencing fuel starvation at high RPM. This was my fault as I installed the used pump assembly without first checking the fuel filter.
Car ran great until three weeks ago. It was then that I started having high RPM starvation / power loss again. I pulled the pump assembly and cleaned the sock filter, then reassembled. Still had high RPM starvation. I then found that the hard plastic fuel supply line that connects to the top of the fuel pump assembly had a kink in it (Series II assembly port is at a slightly different angle, and over time this caused a hard kink). I cut out the kink and replaced that section of line using high pressure fuel hose and worm clamps (I kept the factory snap connector).
Here is where the weirdness starts.......
After reassembling with with the new section of fuel line everything seemed great. No more starvation at high RPM.....car pulled great. That is until I reached a 1/4 fuel tank level. It was there that I experienced starvation again, and eventually stalling. I pulled the pump assembly again thinking that maybe I have the in-tank supply line caught under the fuel float...keeping the float stuck at 1/4 level and just running out of gas. That was not the case as there was still 1/4 fuel in my tank when I pulled the assembly. I then rerouted the in-tank line counter-clockwise out of the pump assembly, to make sure it wasn't interfering with the float sensor. Reassembled and still experiencing the sensation of running out of fuel at 1/4 tank. After adding fuel past 1/4 tank, the car runs without issue.
I am guessing it has something to do with the syphon assembly on the passenger side, but I am not sure what would cause this.
Whevenver I get near a 1/4 tank and I experience the starvation, I can just do a quick right hand jerk to the car to slosh more fuel on the pump assembly, and I can get a few more miles until the starvation comes back.
This Saturday I plan on pulling the pump assembly again, and also the passenger side syphon assembly. Is there a way to test the syphon assembly?
My apologies for the long post, but I thought the history behind the issue could possibly show a different problem than the syphon assembly.
Car ran great until three weeks ago. It was then that I started having high RPM starvation / power loss again. I pulled the pump assembly and cleaned the sock filter, then reassembled. Still had high RPM starvation. I then found that the hard plastic fuel supply line that connects to the top of the fuel pump assembly had a kink in it (Series II assembly port is at a slightly different angle, and over time this caused a hard kink). I cut out the kink and replaced that section of line using high pressure fuel hose and worm clamps (I kept the factory snap connector).
Here is where the weirdness starts.......
After reassembling with with the new section of fuel line everything seemed great. No more starvation at high RPM.....car pulled great. That is until I reached a 1/4 fuel tank level. It was there that I experienced starvation again, and eventually stalling. I pulled the pump assembly again thinking that maybe I have the in-tank supply line caught under the fuel float...keeping the float stuck at 1/4 level and just running out of gas. That was not the case as there was still 1/4 fuel in my tank when I pulled the assembly. I then rerouted the in-tank line counter-clockwise out of the pump assembly, to make sure it wasn't interfering with the float sensor. Reassembled and still experiencing the sensation of running out of fuel at 1/4 tank. After adding fuel past 1/4 tank, the car runs without issue.
I am guessing it has something to do with the syphon assembly on the passenger side, but I am not sure what would cause this.
Whevenver I get near a 1/4 tank and I experience the starvation, I can just do a quick right hand jerk to the car to slosh more fuel on the pump assembly, and I can get a few more miles until the starvation comes back.
This Saturday I plan on pulling the pump assembly again, and also the passenger side syphon assembly. Is there a way to test the syphon assembly?
My apologies for the long post, but I thought the history behind the issue could possibly show a different problem than the syphon assembly.
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