Walbro 400LPH Fuel Pump Modification
just thought id point an update to my situation and for those who have trouble in the future. there is a magnet built inside of the housing that im assuming (someone correct me if im wrong) allows the return fuel to enter the tank and stays open as long as the car is running.
for some reason the magnet was staying closed so we tapped it a few times with a small hammer and reinstalled the pump and hooked everything up and the car is fine now idling perfectly.
for some reason the magnet was staying closed so we tapped it a few times with a small hammer and reinstalled the pump and hooked everything up and the car is fine now idling perfectly.
Hope to hear back about this!
you probably messed up the little oring on the side of the fuel pump's pickup. <brain fart right now cant remember the name of it>
just disassemble it, look down the tube to see if the oring is sidways and straighten it out
just disassemble it, look down the tube to see if the oring is sidways and straighten it out
The side of the fuel pumps pick up? wouldn't that be the filter sock looking thing? Doesnt make since that would have anything to do with it.
The large o-ring type seal that goes on the pump outlet nozzel looks good from what I can tell that pushes up into the hat
The large o-ring type seal that goes on the pump outlet nozzel looks good from what I can tell that pushes up into the hat
Just wanted to give everyone an update since i was one of the first here to do this pump, the original 400lph pump was fine for about 8 months on e85. One day did a pull and the car was really lean. i found that the sock started to fall apart, literally looked like the material was being eaten up by gas tank termites LOL. I can post pics tonight if anyone wants to see them, also the pump had alot of corrosion inside as you can see through the port where the sock attaches too.
With that said, i had an e85 one on the shelve and decided to run that one with the e85 install kit. The body of the e85 is slightly bigger not much but it is so it will require trimming on the sock part where it meets the pump, only like a mm or 2 in order to get it to sit all the way in the tank. I also experienced blowing out the grommet a few times since i did this not sure why so i ended up having to use 2 o-rings instead of the factory grommet, seems to me that the nipple on the pump is just slightly different than the non e85 version.
With that said, i had an e85 one on the shelve and decided to run that one with the e85 install kit. The body of the e85 is slightly bigger not much but it is so it will require trimming on the sock part where it meets the pump, only like a mm or 2 in order to get it to sit all the way in the tank. I also experienced blowing out the grommet a few times since i did this not sure why so i ended up having to use 2 o-rings instead of the factory grommet, seems to me that the nipple on the pump is just slightly different than the non e85 version.
Bump for any information as to what modifications you did to the fuel pump/pump hanger to get the Walbro E85 version to fit? The E85 version is considerably longer in length than the standard 400.
Just wanted to give everyone an update since i was one of the first here to do this pump, the original 400lph pump was fine for about 8 months on e85. One day did a pull and the car was really lean. i found that the sock started to fall apart, literally looked like the material was being eaten up by gas tank termites LOL. I can post pics tonight if anyone wants to see them, also the pump had alot of corrosion inside as you can see through the port where the sock attaches too.
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All i had to do was cut the first ring off at the top where it slides into the rubber grommet. if you look at the pump you will see 2 rings.
then i trimmed the sock where it attaches to pump. fit like a dream no issues. Base pressure did increase with the new pump and a rewire, drilled syphon and eventually added a afpr.
then i trimmed the sock where it attaches to pump. fit like a dream no issues. Base pressure did increase with the new pump and a rewire, drilled syphon and eventually added a afpr.
All i had to do was cut the first ring off at the top where it slides into the rubber grommet. if you look at the pump you will see 2 rings.
then i trimmed the sock where it attaches to pump. fit like a dream no issues. Base pressure did increase with the new pump and a rewire, drilled syphon and eventually added a afpr.
then i trimmed the sock where it attaches to pump. fit like a dream no issues. Base pressure did increase with the new pump and a rewire, drilled syphon and eventually added a afpr.
I just installed an e85 400lph in my car with the Deatschwerks re-wire kit and wanted to share my findings. I bought MAP's Fuelab AFPR kit in anticipation of overrunning the stock regulator.
When I started my car up, the fuel pressure was 60+ and I couldn't do anything to bring it down (including completely removing the screw). I ended up having to drill out the return "tee" in the fp assembly as discussed here: https://www.evolutionm.net/forums/ev...ould-know.html
Once I drilled out the return fitting, I was able to get pressure down to about 45-46psi at idle.
When I started my car up, the fuel pressure was 60+ and I couldn't do anything to bring it down (including completely removing the screw). I ended up having to drill out the return "tee" in the fp assembly as discussed here: https://www.evolutionm.net/forums/ev...ould-know.html
Once I drilled out the return fitting, I was able to get pressure down to about 45-46psi at idle.