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View Full Version : hello,searched...& still need info on Fuel pump from Z32 vs stock S14 fuel pump

ass15
08-14-2004, 08:37 PM
hello,

searched...but couldn't find specs on Fuel pump from Z32 vs stock S14 fuel pump...


thx in advance... i'm usinga 255lb walbro , and runing way too RRIIICH.... (blk and blue smokes)
Steeles
08-15-2004, 09:27 AM
so um... whats the question? Z32 will outflow your walbro
ass15
08-15-2004, 10:09 AM
was wondering whats the spec on Z32 fuelpump and our stock ka fuelpump...

well in another word, my 255lb walbro is running the car really rich..too rich, so i'm thinking of switching back to stock ka fpump, are the stock ka fpump good up to certain hp?
skatanic28
08-15-2004, 10:34 AM
i thought upgrading a fuel pump didnt make a difference in terms of afr. if you are running rich, check out your fpr.
i helped put a 255 in a 3rd gen maxima last month and it ran the same after that....
ass15
08-15-2004, 10:40 AM
i've fmu ratio : 8:1
Jeff240sx
08-15-2004, 11:06 AM
Stock pump I wouldn't go past 210-ish. About 5psi.
The pump IS NOT making your car run rich. It's something else, so don't blame the pump anymore. Factory regulator is not outflowed by the Walbro, but is by the Z32 tt pump. I'd blame your FMU for running rich, and get a real fuel setup, either AFC or ecu burn.
-Jeff
wootwoot
08-15-2004, 11:26 AM
blue smoke=oil doesnt it?
dannyca13
08-15-2004, 06:52 PM
i did a walbro 255 install and mine was running about 41 psi until i installed a nismo fpr. the walbro definately outflows the stock fpr.
orion::S14
08-15-2004, 07:02 PM
A good, working stock FPR will keep the pressure at stock specs...

- Brian
silviasichigo
08-15-2004, 07:31 PM
Zenki Z32 will flow 230lph at 41~ psi at 13.5v as far as the KA I have no Idea????!!!! I have a Z32 in my S-13.
nrg
08-16-2004, 12:12 AM
i installed walbro and my car isnt running rich. it's the same PSI as i had from my stock KA pump.
check your FPR and FMU.
ass15
08-17-2004, 10:49 AM
so my next step is to buy fuel pressure/ engine vacuum gauge... What's your fuel pressure?
i was told the stock f pressure should be 34psi with the vacuum line hooked up, and 43 w/o... well if they are not what it should be on mine, then what does that say? fmu is too much or the stockk fpr is not doing its job?
thx peeps