sr20det Nismo 555cc injectors help

[Whatsaturbo]

How would one go about cleaning my Nismo 555cc injectors the right way?

Im having a bad fuel cut, and seems like misfire. The car will run good for about 15-30minutes after not being on all night. so first the first start up an first drive of the day it'll run smooth. but then starts to cut out bad. Im thinking it's the injectors? I've tried the fuel pump - it's a 255 walb, an replaced fuel filter, an made sure there's no boost leaks, fixed the alt. Needing some help. Done tons an tons of research.


t25
Jim Wolf Ecu
Z32 MAF
Nismo 555cc injectors
cx racing fmic


Thanks in advance for the help!

[Whatsaturbo]

would love some advice. Has fixed some issues, but still needing to address this one.

[nickauger]

What RPM fuel cut happen ? Its sound like a bad maf, or if it cut when your are in boost I bet your spark plug are going bad

[Whatsaturbo]

it's at a random non specific rpm. and i've replaced MAF, and just did spark plugs, an gaped .28

[nickauger]

try to disconnect the o2 sensor and see if it happen again

[Whatsaturbo]

did that and still has the same issue. Thanks for the responding btw.

[joe3180]

have them flow tested. I cant quite think how the injectors would be the problem though. My car had some problems like you describe but my problem was a leak in the intake pipe after the maf. When I had a bad injector it had no power at all and you can tell it was running on 3 cylinders. Ill think about it some more and get back to you if I can think of anything else though.

[Whatsaturbo]

thanks, ill have them flow tested. i've been chasing everything. next im thinking is ignition somewhere?

[Mintbagel]

ok i know this sounds crazy, but i had a very similar issue, and what i ddi was cleaned my IACV and that fixed it. dont ask me how i cam upon that answer, but i figure its worth a shot. and good luck man hope it works out!

[codyace]

If it was an injector issue it would happen all the time. Check CAS.

[Mikester]

^^I had the very same issue back in the day... Turned out my ECU was jacked.

[ultimateirving]

Couple things it could be, Does the ecu throw any codes?
has the vehicle always behaved like this or has this developed recently?
Does it feel like its cutting out only under boost? or does it act up while driving miss daisy?

How would one go about cleaning my Nismo 555cc injectors the right way?

Im having a bad fuel cut, and seems like misfire. The car will run good for about 15-30minutes after not being on all night. so first the first start up an first drive of the day it'll run smooth. but then starts to cut out bad. Im thinking it's the injectors? I've tried the fuel pump - it's a 255 walb, an replaced fuel filter, an made sure there's no boost leaks, fixed the alt. Needing some help. Done tons an tons of research.


t25
Jim Wolf Ecu
Z32 MAF
Nismo 555cc injectors
cx racing fmic


Thanks in advance for the help!