Installing a fuel pump

[ReubenH]

I just got myself walbro, and i've searched but haven't found any instructions or tips on installing them

So what are the little things yah need to know when taking fuel pumps in and out? About the only thing i recall is, don't do it with a full tank... lol...

[dubbedup]

no smoking ....

im pretty sure its just a bolt staight in mod...otherwise you will have to get creative like me and use hose clamps

[Guest]

Its self explanatory when you remove the old pump and examine/compare with the new...... Not smoking is prob a good suggestion haha.

[ReubenH]

i spose what i really want to know is, is it fine to do it on a quarter of a tank? And any other little dont's? I guessed the rest i could figure out

[funkytown]

i cant find it.. but Jase (spark 38) did a write up on here somewhere...

 ReubenH said:

i spose what i really want to know is, is it fine to do it on a quarter of a tank? And any other little dont's? I guessed the rest i could figure out

yer less fuel the better, less wofting of gas, and less split.

[gazzy2000]

 ReubenH said:

I just got myself walbro, and i've searched but haven't found any instructions or tips on installing them

So what are the little things yah need to know when taking fuel pumps in and out? About the only thing i recall is, don't do it with a full tank... lol...

dont use an axe or a blow torch ;D

[ReubenH]

Got it

Sounds easy enough, will report back with my failures shortly.

[Guest]

 ReubenH said:

Got it

Sounds easy enough, will report back with my failures shortly.

If you get it too wrong we will prob see it on the news.... youll be fine

[MercuryFree]

Relieve pressure by opening the fuel cap first unless you want petrol to go everywhere when you take off the lines

[gazzy2000]

tip, if you have too much petrol in the tank

- take the return line off

- fit an extension hose to the return line, secure with hose clamp (garden hose?) put the end of the hose in a petrol can

- ensure all safety precautions i.e. extension hose is on tight, can is steady on the ground, safety goggles?, vented area, no smoking etc

- start car, only idle it

- cud be a good idea to have two ppl present, so someone can turn the car off ultra quick if something does happen.

The Fuel pressure reg is open fully at idle, so with the return hose off, fuel will pump out nice and quick draining the tank.

Some ppl use the turn key off and on a thousand times method..... :

[Munkvy]

Use the factory sock if at all possible, as the Walbro one is tiny and points upwards = makes fuel surge worse! Found this out the hard way

[BC5RA]

 Munkvy said:

Use the factory sock if at all possible, as the Walbro one is tiny and points upwards = makes fuel surge worse! Found this out the hard way

Agreed, Re use the OE sock, it's angled 45 degrees, whereas the Walbro is at 90 making it further away from the fuel level.

[ReubenH]

Yeah, i used the factory sock, brendon at GFB who sold it to me advised this also.

And that was pretty straight forward, i'm amazed at how much smaller the walbro is over the factory pump. Seriously half the size! But the car starts and runs and revs fine, just gotta go for a test drive.

i still can't get over the size difference....

[Guest]

 ReubenH said:

Yeah, i used the factory sock, brendon at GFB who sold it to me advised this also.

And that was pretty straight forward, i'm amazed at how much smaller the walbro is over the factory pump. Seriously half the size! But the car starts and runs and revs fine, just gotta go for a test drive.

i still can't get over the size difference....

Yeah its noticably smaller, feels like a downgrade from that perspective, luckly they are a proven performer

[ReubenH]

Sweet as. Just tried a few pulls at 1.35 bar (20psi) up to 8 grand, and not a single problem to report, the little sucker certainly is up to the task. Would love to get a proper air/fuel reading at those numbers thought to be sure, for now i'll leave i at 1.25 bar like always (18psi)

[BC5RA]

A simple squirt would have sufficed, hope you didn't drive straight out on 20psi?

[ReubenH]

No. Course not. tested it slowly, building up and up making sure i couldn't hear anything untoward.. And i never boost when the engines cold too.

[smokn4]

yea i noticed the diff when i chucked mine in.

[BC5RA]

 ReubenH said:

No. Course not. tested it slowly, building up and up making sure i couldn't hear anything untoward.. And i never boost when the engines cold too.

Sorry, just feeling mechanical sympathy for your engine.

Do not doubt you look after it

[Ngarutoa_NZ]

cheers for the OE sock tip ppl, have a Walbro en route for my '99 sti ra after OE pump died last nite-walbro pump was half the price of an OE from local subbie shop.

[ReubenH]

I got pics btw, which i was going to post, but i didn't have the cable to get them off the camera. Stupid point and shoot shitty things.

Will get them eventually.

[Guest boostin]

 ReubenH said:

I got pics btw, which i was going to post, but i didn't have the cable to get them off the camera. Stupid point and shoot ****ty things.

Will get them eventually.

Lol, I just use my phone camera and Bluetooth it to the laptop!! ;D