Anything out of the ordinary? Previous owner said a walbro 255 was put in less than 5000 miles ago, so im trying to figure out if there was just a loose hose connection, (main feed line wasnt secured perfectyl but im not sure if it will effect anything). Whats a good way to see if there is actually a walbro in there, and what is a good way to test the pump?


For those that don't know. I am trying to figure out why with the vac hose off (vac hose on or off regulator didnt effect fuel pressure for some reason) the regulator, i only have about 23psi at idle. And no fuel pressure when i prime the pump.

 

The only way to tell what pump you have in there is to remove the pump from the bucket (the big white-colored thing), and the Walbro is smaller than stock (if I remember correctly).

Look at the hoses and connections. Even the smallest leak or crack can cause pressure problems.

 

One way to "possibly" tell is if a W is stamped into the pump on the side. Granted it could be some no name who decided to mark it as a walbro. But that may help a little.

 

yes the walbro is smaller than stock, and if i remember correctly, isn't a perfect fit in the housing. i think i secured it in there with a band clamp or a thick *** ziptie when i did mine. but that was almost a decade ago. it was a plug and play install though with no issues.

 

any way to remove the bucket without having to go out and buy some of that special adhesive stuff?

 

that plactic housing that encloses the pump should come off with no real issues?

the pump looks like this by the way

 

just curious what is the special glue you are supposed you use called? i went to tognottis and they didnt have any idea what you use, they said that epoxy would be fine to seal it but i feel that gas would eat right through it.

Jeremy

 

when i replaced mine i didnt use adhesive. i used a soldering iron to melt the plastic back together all the way around the rim of the bucket.

 

interesting idea. how well has it held up?

 

Polyethylene is resistant to gasoline, and adhesives. The Racetronix kit comes with what is basically unmarked SuperGlue.

 

alright well i tested the pump today (hooked it up to my 12v battery charger and put it on the low setting) and took a video for you guys. It would appear that it is pumping alot of fuel but i don't really have anything to compare it to.

How does it look?


also, any tips to getting the assembly back into the tank? Ive been wiggling it for 10 minutes or so and im starting to get really frustrated. Thanks guys

 

IMO you really need to check the pressure and not the volume as an estimation. A weak pump cannot hold/keep the requisite fuel pressure, but may supply low volume just fine. I know that really didn't help you.

 

well, the real way to test the fuel pump, is first make sure you got full batt. voltage to the pump when its running? maybe you got a bad power (grey) wire supplying not enough current to the pump to spin it corectly. doubt it but its a possibility. next, you gotta block off the return side. if blocking off the return side makes your fuel press come up, then your regulator is leaking fuel back to teh pump. not "regulating" the fuel press. properly. if blocking off teh return line doesnt make the fuel press go over 50psi, then the pump is just shot. you can get a walbro for like $125, I wouldnt even think of putting the stock pump back in there. which I think it is.

see how that clear"ish" tube is crimped over the pump down in the bucket? thats how the factory one is. most of the walbro pumps come jsut as the pic above is. where you gotta put a small section of hose clamp over the pipe on the sender, and over the pump outlet. but I have heard of plug and play pumps. just dont know if there refering to only the harness, or if it really is a plug and play. as in direct replacement that just pops in place as a stock one would on the sender.

 

well guys i don't know what i did, but it fixed it. I think it was that the main feed line was loose or something. However it also could have been something electrical but im not sure. Anyways, usually the car takes forever to start, and this time it fired right up. This surprised me, so i went to check my fuel pressure guage and i had 60psi!! So i shut the car off, got some tools, started it back up and adjusted it to 43.5psi. Car runs really well right now. I thought it was a stock pump when i pulled it out too, but now that its running right, its MUCH louder than any other stock pump i have heard. Sounds exactly like the walbro 255 my buddy has in his vr4, so i think it is. Anyways, im pumped. Car is running good for the time being.

 

oh, I should have told you to check the terminal tension on the connecter behind the back seat that goes over to the top of the tank. make sure that term. is not spread. that is one way you could have "fixed" it by taking it apart and putting it back together. good luck though.