New Fuel Pump what to get?

sphell · 11-07-2005, 10:28 PM

I think my fuel pump is packing it in cause the car leans out all the time, especially just after startup. I've got an A/F meter in the car and it dips right into the red and you get no acceleration when it flat spots. I'm thinking its the pump cause I probably killed it when I ran super high fuel pressure with the turbo setup.

Anyway, I'm gonna run NOS in the future so i want something that's got a bit more flow than the stocko MPI fuel pump. I heard that Walbro make a good in-tank pump that flows a heap of fuel, and if I remember correctly there is a Merc Benz pump that flows a fair bit but I don't know what model it's from. Then there is always the Bosch ones, I think it's the 070 or VL turbo ones or something?

Anyway, what I want to know is what pumps do you guys recommend and do i have to get an in-tank one or can i just **** that off and get an external one?

Cheers
Doug.

edit: how much do the MPI Ford pumps flow btw?

dansedgli · 11-07-2005, 10:31 PM

You should be able to pick up an intank 500hp walbro pump for $160 from ebay or Performance forums, calaisturbo forums etc etc.

I had one but never fitted it and sold it along with my turbo gear. Apparantly they are pretty good.

EASPRINT · 11-07-2005, 10:34 PM

i use the bosch 4040 in tank pump...works very well. Should cost between $200-$250

InitialD · 11-07-2005, 10:57 PM

Quote:

Originally Posted by sphell

I think my fuel pump is packing it in cause the car leans out all the time, especially just after startup. I've got an A/F meter in the car and it dips right into the red and you get no acceleration when it flat spots. I'm thinking its the pump

My car exactly this over 70kph, flatspots and doesnt accelerate unless i push it harder, still dont know what its doing and ive changed the fuel pump twice

:

Let us know what it turns out to be ;)

EA2BA · 12-07-2005, 08:24 AM

Quote:

Originally Posted by InitialD

My car exactly this over 70kph, flatspots and doesnt accelerate unless i push it harder, still dont know what its doing and ive changed the fuel pump twice

:

Let us know what it turns out to be ;)

My problem in this regard was 105kph and I feel it was my fuel reg fella's

sphell · 12-07-2005, 10:34 PM

Quote:

Originally Posted by InitialD

My car exactly this over 70kph, flatspots and doesnt accelerate unless i push it harder, still dont know what its doing and ive changed the fuel pump twice

:

Let us know what it turns out to be ;)

Yeah I'll check it out on the weekend mick and let u know. I might change the reg first like dellboy said cause im sure i've got one lying around somewhere. Actually i might go over the whole fuel system and change the filter too cause I always run my tank till the light comes on :P

InitialD · 12-07-2005, 11:05 PM

Well i changed

Fuel Reg
Fuel Filter
Injectors
Fuel Pump
and just for the sake of it, fitted another fuel rail and buffed it up

Made no difference :|

FPVWEPN · 13-07-2005, 12:45 AM

well i guess ur problems dont lie in your fuel system them initial d???

doug let us know how the fuel pump goes if it makes a difference

13-07-2005, 12:53 AM

just go the holley blue

dansedgli · 13-07-2005, 06:00 AM

Quote:

Originally Posted by bradley02

just go the holley blue

Yeah thats a great idea, stick a carby fuel pump onto an EFI car.

ing_sm Anything over 15psi is overrated!

:

MrLandau · 13-07-2005, 03:58 PM

The pump to go for is the Walbro 255l/hr GSS340. Don't get sucked into buying a GSS342 as they are set up as returnless pumps and are not happy running constantly and lead to premature failure.
Shane

niko · 13-07-2005, 05:12 PM

wats a standard vdo one worth?

sphell · 13-07-2005, 10:24 PM

Quote:

Originally Posted by MrLandau

The pump to go for is the Walbro 255l/hr GSS340. Don't get sucked into buying a GSS342 as they are set up as returnless pumps and are not happy running constantly and lead to premature failure.
Shane

Would a GSS-341 be any good? They are the ones they have on ebay.