rb26 running rich

[qwertyz]

Hey guysI have small problem that i cant figure out.I got rb26 in a 240sx(s14) that is running extremly rich. No mods to the engine as of right nowall stockwires from ecu all check outtp sensor and tp switch are working (ohm and voltage wise)timing is correctcas is finehavent checked the o2 sensor or mafs yet. any ideas ?

[Sil240]

What fuel pump and regulator are u running? ?

Check the FSM for the how to on check the O2 and Maf. How about the valve timing? ? Double check you timing belt.

[qwertyz]

oe fuel pressure regulatortiming is finecas sits in the mid

[qwertyz]

fuel pump out of 97 q45 which is 34 vacume 43 no vacume I think that is really close to stock bnr32 fuel pressure

[Sil240]

As for timing I meant timing belt not ignition timing. Make sure all the marks line up at TDC

did you Chang. You O2? ?

Or have you checked. Your coolant temp sensor? Maybe it thinks the car is cold.

[qwertyz]

ok bnr32 fuel press 36 vacume 43 no vacumetiming belt is installed properlyas for coolant temp sensor I replaced it just because of that (does not mean it's bad from the store) i will check my outputs of coolant sensor on my ecu tonight.and o2 and mafs(i did not replace o2 yet)

[Joe]

how do you know its running rich?

what is your timing set at. not where the cas it, what is the number?

[Sil240]

I would Def pick up 2 new sensors, or did you go single Turbo?

Clean your MAFs, probably isn't the problem but it will help your motor run smoother and better

[qwertyz]

well when the car is eating 20 gal in 30 milles and flooding my plugs out i think thats the deffinition of it being rich ( and if i dont start it just right i got to take plugs out and dry them out)

I will check the o2 first then I will swap them out ( if i find the cross over o2)as for mafs I cleaned them already (does not mean i did a good job at it)

[eh?]

Are all the plugs wet when you pull them?Check your ecu coolant sensor.

[qwertyz]

coolant sensor check out ok. at ecu 4.3v cold 2.8 mid 1.3v t-stat openedwhich is as per ABC book iz perfectnext on the list is o2 and mafs

[qwertyz]

okas per o2 sensor idle under 1.0v (.54-.93) create vacuum leak and fix it jumps to 1.4 vwhich tells me that both of my o2 are reading(dont have a scope at home cant realy see how fast they are switching, and i cant hook up to 14 pin connector for some reason no communication with ecu, and yes everything is connected)

as per mafs idle 1.2v as rpm raises voltage raises 2000rpm abou 1.8, 1.9vwhich tells me those are working fine also

So NOW I AM EVEN MORE CONFUSED

[qwertyz]

ok after reading a bit and talking to people after creating a vacuum leak my reading (on o2's) was supposed to drop not raisebrrrbump

[Sil240]

Awesome so go buy new o2s and you should be good.Whenever you do a swap always change the tune up parts.

[qwertyz]

Well no luck there o2 didn't fix itfound a small vacuum leak (not vacuum, pressure leak after the turbos)that helped but not all the way

It still bugs down if i hold rpm at 1500 for few minuted then full throttle it, the engine will not catch up with the throttle i got to let go of it and let the engine catch up then i can rev it up

????any suggestions?