running too rich

[cd_three]

need help cant stop sr20det to stop running rich tried it all new maf new injectors new nismo pressure regulator new ecu noting has helped what could be my problem thanks

[slidestyle69]

this is your first post and your talking like your so nervous you cant explain what the heck your talking about so somebody can understand you.

if you have replaced the injectors, fpr and its not pumping fuel thru it then that means there's no fuel getting to it.

is your fuel pump working?

[Sil80315]

this is your first post and your talking like your so nervous you cant explain what the heck your talking about so somebody can understand you.

if you have replaced the injectors, fpr and its not pumping fuel thru it then that means there's no fuel getting to it.

is your fuel pump working?

Uh hes talking about his car running rich not running lean or not getting fuel,

How do you know your running rich? and are you using an o2 sensor and is it plugged in?

[cd_three]

well i do have and o2 and it is pluged in and in the right plug i also have a rich lean gauge and plus it is puffing black and smell like fuel it ran through a tank of gas just idleing i am a infiniti techincian so i do kno a little about cars i built the engine so i kno that all my internalls and gasket are good its just taking to much fuel and im kinda out of ideas thanks for not being a smart a** lol just trying to get running good thats all

[Justin35ll]

a tank of gas idling? You def have a problem.. but not sure what since you already replaced the fpr, injectors, and ecu

[blueballa]

how is your idle?

maybe you should invest in a safc? for better controll

just a suggestion***

[jwren]

1. throw the a/f gauge in the garbage and get a wideband2. what mods on car?3. do you have 255lph without a adjustable fuel pressure regulator?4. what size injectors?5. pics or vids would help

[surfer240sx]

first check and see if your ecu is bad.... easy and free things first. when you start the car the light on the ecu should go off in a few seconds if it stays on inspect for the burn fix the short and replace ecu. if it goes off run blinky light codes...

[Fuel4Blood]

He has a new ecu refer to first post. Did you check timing? What do you have the FPR set to? Also a AEM uego would help get a accurate reading.

[cd_three]

i do have an afc i tried that after the fist signs of running rich but it didnt help the idle is at1000rpm i reserched this other forum and it says that a stuck open iac valve or closed could cause my poor fuel/air ratios i have and apxi wide band o2 just havent had time to install it

[Fuel4Blood]

So did you check your timing?

[cd_three]

no not at the moment i have it all apart again im ordering a new iac valve cause i found a nismo forum that had a little insite about it and it was saying that the iac controls not just the idle but the a/f mixture still moving foward one step at a time

[Fuel4Blood]

I would check timing first, its free to check it. Also a IACV allows a small amount of air to pass the throttle plate and enter your motor when at idle so you don't stale. When its goes bad you'll get a erratic idle or your call will stale. Your problem sounds like timing to me.

[rc1honda]

I don't see how any of us can give any real good advice without knowing his setup. What size injectors?What MAF?What kind of managment?What bolt on's?

This thread is full of speculation. If he needs a AFC then he probably has bigger injectors and a Z32 MAF. IF that's the case the car is going to run pig rich until you tune the AFC. You need a friend and a abandoned road or the dyno is the best choice. The you have to take away fuel at each RPM range. If your idleing good then check for vac leaks to. Sound liek it's just running like a untuned car.

[Ilvemynissan]

What about checking the voltage to the TPS?