After completely rebuilding and getting rid of all error codes and problem areas, my dohc zc sounds f***ing amazing...here's the history..

So minutes after original installation of a walbro 255 pump i blew the headgasket, at which time the car was stalling out and couldn't really get it back home, had to push like a ****...i attributed the stalling to 0 comp on cyl 4. but after the rebuild and compression check (which was excellent, 180+ across the board, presumably before total ring sealing). But after a couple runs around the block it started stalling and killing the engine. After a little tinkering and double checking compression, made another round and same thing. Then i noticed it was really only going downhill, confirmed this by going up my driveway nose first in gear, no problems, sat there 10 minutes, but as soon as i tried to back up my drive, which is kinda steep, boom, motor stalls.

So now i think the culprit can only be the bs walbro sock(filter). I have heard people having problems, even at half full tanks, which mine is about 3/8. Firstly, if anyone can personally confirm that would be awesome. I know most people use the stock filter, which is an option, stocker is ok...but my question is this...

for cleanliness sake..would it be possible, unless completely unadvisable, to use a small piece of fi tubing to relocate the walbro sock to about where it needs to be? Maybe even find a splitter and run 2 lines with filters at both ends to run the pickups at different areas more like a fuel cell?

And for the record this motor will be boosted, just trying to get everything ready so it's less to do when it's time to install everything else. 255 will be a must, while i could use stock pump for now, i just don't want to, and i might as well find a good solution to the problem.

Also...i've heard of people with other makes extending their stock sock location to utilize the fuel in the very bottom that we all know you never really get to use, although i'm not sure on how they did this, i assume a small extension of tubing, so i would figure this could/should be fine for everything as long as the sock sits in a good location and is well secured?

 

Read this thread: https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/car-dies-when-gas-goes-below-1-4-tank-help-searched-3024291/

I have solved the problem for myself and I believe 4 other people. Mine would always stall at 1/2 tank when coming to a stop or turning or going downhill. My tank will sit even on the E mark and fill up for 10 gallons without stalling.

The problem is either the rubber fuel hose at the top of the pump or the wrong sock filter. If the Walbro uses the same type of sock filter as the oem pump, you can get the FS121 sock filter and it will fix it.

But beware, nobody has confirmed if the FS121 works with a Walbro pump. Try at your own expense. If it looks like the sock mounts the same, then try it out.

If you can easily relocate the sock filter and the FS121 doesn't look like it mounts the same, then give extending it a shot. But beware, the damn things like to fall off. It sucks to keep dropping the tank nonstop, trust me.

 

oh i know, i've dropped the tank a few times, and i've read that article before, my problem wasn't falling off, and i made sure before installation the pump sat exactly where stock did, out hose was perfect...i just didn't really consider how the sock itself would sit, but with a little hosing and some screw clamps, shouldn't fall off, guess it just depends on where it'll sit after extension.
the sock i got with my kit, which might have been from a knock off kit, pump is walbro though, is about 2 square inches, stock one i had was like 2x4 or so, and i've read somewhere that the stock one has some kind of hose in it? to suck up the gas instead of just picking it up at the top of the sock i would assume...i know the stocker had what i thought was some kind of baffling in it, felt like a plastic ribbon, suppose this would be what actually picks up the fuel?

 

It's not that it has a hose, it's that the body of the sock itself extends to the front of the tank toward the front of the car instead of off to the side. It also goes down ever so slightly. Designing it this way places the fuel sock inside of the baffle of the tank, which results in the car not stalling. If you can figure out a way to do the custom one and have it wind up in the baffle then go ahead, it's your car. I'm merely stating what has worked.

Only the OEM sock or the FS121 goes the correct direction, which is forward and into the baffle.

I would be worried about the one extended by hose sloshing around, though. It wouldn't be solidly mounted like the FS121 to a pump. And the angle that the FS121 is at places it flush with the bottom of the tank in the baffle.

And no, I believe it's just another layer of strainer inside of the sock itself.

 

Ah...knew there was something inside, just not exactly what it did. I replaced with my stock sock filter, seems to be fine, had one stall right after, probably just air in the line...going to fill up tonight and all should be good..it was just a thought for possibly routing a splitter and dual pickup lines/filters, i imagine it would be a pain with hosing because it does flex and move, thanks for the input