anyone know if they make a direct fit walbro fuel pump for the cobalt or do i gotta get a universal one and make it work?

 

the pump fits in that black canister in the full tank to full be fine. i can't figure out how to get my extra one apart but i got time.

 

im a little lost with wat you said spanky

 

if you look at zzp's site they have an image or 2 of the cobalt fuel pump removed. this get-up looks nothing like the walbro pics we've all seen on the net. the fuel pump for the cobalt is housed in a canister that has the fuel level sender attached to it. to replace the pump you pull the canister apart to do so.

 

oooooooooooooooh

 

The canister needs dremeled slightly to fit. Also, the harness will be different, but a set of quick disconnects at any parts store fit on the Walbro's.

This for a 2005 LSJ, though. I run the GSS342 I believe.

 

thats the model i was lookin at. ill prolly order it this friday if i cant get a interceptor gauge

Walbro 255LPH High Pressure Fuel Pump GSS342: No Limit Motorsport

 

You sure it's a pump you need? A 1:1 boost/vac reference fuel system would probably be better for you.

 

i got the zzp one but it leaks at the regulator right now....

 

well, ever since i gutted my cat and changed my intercooler piping ive been running lean. i talked to vince about it and this is what he said in the email

"What I am seeing is pretty typical of a fuel pump issue - fuel ratio is OK
for a second or so, then it takes a nose dive - there's no corresponding
drop in MAF signal, though, so it's not a MAF sensor issue."

i just have no way of checking my fuel pressue at wot to see if its dropping. also my car starts leaning out when i go past half throttle.

 

inj? what size?

 

Sounds like a pump. I had similar issues when I switched to E85. I would assume the 2.2 Cobalt's have an even smaller pump as well.

 

i got 60s. i was startin to think i over worked my pump wit those big ass injectors lol

 

thats wat i was figuring. i just wanna find a direct replacement pump lol. i wish these pump were accessible from under the rear seat like it was in my civic lol

 

Dropping the tank isn't bad. Just sucks if it isn't empty.

It's an easy install. Very little dremeling is needed. Plus, if that Walbro comes with the Pigtail/Harness, you won't need quick disconnects.

 

yeah, it is easy to drop the tank. i did mine at around an 1/8th a tank with hand tools. i have th lsj pump at the moment.

 

ive been keeping about a 1/8 tank in it just in case lol. im ordering a fuel pump as i type this

 

shes ordered and should hopefully be here in 2 days...

 

you gotta do a how to when you get it.

 

Agreed!

 

i gotts figure out how to do it myself lol. ill make a attempt on it tho

 

Drive down here and I'll help you lol

 

lol. i cant even go pass half throttld without leanin out. i was drivin on the highway like a old grandpa the other day. im actually tryin to get stationed in tucson

 

I've thought about changing the pump but it seems to be holding up fine I'm on 80's and I'm running a bit rich at 23 PSI. GM is weird...

 

lucky **** lol