CA18DET cylider 4 dying after long drives

[slightlysideways]

so heres the deal i have a CA18DET I've had it for about 3 months now and just recently after a long drive maybe like an hour or so(also if I'm stuck in traffic) cylinder 4 seems to die out

the motor has an SR20 turbo
blown through maf
fmic
and i think higher CC injectors and a mild tune but i can't remember

i feel it might be the injector dying our or is clogged cause my A/F goes lean but i have no idea

any ideas help

i really hope its not the injectors and its just the motors time of the month

[PapaSmurf2k3]

Its entirely possible that injector is just getting weak. Pull the plugs and look at them. If that one is all white and looks like its been running lean, you know what's up.

[slightlysideways]

ok damn i was hoping it was something really easy oh well

any idea where i can get injectors rebuild?
or how to figure out what CC mine are?

[PapaSmurf2k3]

http://www.deatschwerks.com/ is a great place for all things injectors (and fuel pumps)!
I'd try to contact the previous owner to see what the size is. Deatschwerks can flow test, but you'd have to send more than 1 in at that point.

[slightlysideways]

thank you man for the help
and after a long and arduous search i found out what the fuel injectors were
they where the 444CC injectors off a SR20vet/RB