Running extremely rich - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

danmilo1310 · 12-14-2003, 10:42 PM

Ok so i just finished my sr swap but im still not driving it because it is runnung very rich. I mean i put prand new NGK plugs in and they are already fuel fouled. Also the oil is already pretty black, the level went up and you can smell the gas in it. I read this thread

http://www.zilvia.net/f/showthread.p...highlight=rich

and i do have the walbro fuel pump. And i also saw this
http://www.store.yahoo.com/phase2mot...dfuelpres.html
is this a possible reason for my problem or should i look elsewhere. I'm willing to listen to any possibilities even if tis not what i want to here. (also i leak in the intercooler pipin wouldn't cause this would it, I don't think i have one but i'm just lookin for any possible causes. And what about a bad MAFS)
thanks a lot guys.

Evil S14 · 12-14-2003, 11:40 PM

with a decent sized vacuum leak it would run rich as hell, pressure test your piping

Yoshi · 12-15-2003, 02:01 AM

search man.
I personally have posted about this many times.
the walbro puts out huge fuel compared to stock, it WILL make you run rich if you don't, at the very least, have an adjustable FPR to tone it down some.

nnkfws333 · 12-15-2003, 12:40 PM

I was wondering, doesn't the ecu adjust the A/F mixture?

hookedup240 · 12-15-2003, 01:01 PM

Quote:

Originally posted by nnkfws333
I was wondering, doesn't the ecu adjust the A/F mixture?

I'm not sure, but i know a few people that had to get a/f regulators.

kickertu · 12-15-2003, 09:35 PM

run the car, and then pull the plugs, and get a flashlight to see if there is gas in the chamber.... if its alot, let it evaporate out,...

then unplug the injectors, and turn the car over.. if you are still getting fuel in the chamber, then you have a leaky injector... i had one... it SUCKED!!! couldnt figure out what was going on to save my life... until the whole cylinder filled with gas....

if you have q's message me

aim- kickertu
[email protected]

12-14-2003, 10:42 PM	#1
danmilo1310 Join Date: Jul 2003 Location: chicago ridge Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	Running extremely rich Ok so i just finished my sr swap but im still not driving it because it is runnung very rich. I mean i put prand new NGK plugs in and they are already fuel fouled. Also the oil is already pretty black, the level went up and you can smell the gas in it. I read this thread http://www.zilvia.net/f/showthread.p...highlight=rich and i do have the walbro fuel pump. And i also saw this http://www.store.yahoo.com/phase2mot...dfuelpres.html is this a possible reason for my problem or should i look elsewhere. I'm willing to listen to any possibilities even if tis not what i want to here. (also i leak in the intercooler pipin wouldn't cause this would it, I don't think i have one but i'm just lookin for any possible causes. And what about a bad MAFS) thanks a lot guys.

12-14-2003, 11:40 PM	#2
Evil S14 Zilvia Addict Join Date: Dec 2001 Location: Indianapolis/Bloomington Age: 41 Posts: 610 Trader Rating: (0) Feedback Score: 0 reviews	with a decent sized vacuum leak it would run rich as hell, pressure test your piping __________________ image exceeds forum limit -Moderation

12-15-2003, 02:01 AM	#3
Yoshi Post Whore! Join Date: Jul 2001 Location: Washington Age: 48 Posts: 3,003 Trader Rating: (1) Rides Gallery: Yoshi Feedback Score: 1 reviews	search man. I personally have posted about this many times. the walbro puts out huge fuel compared to stock, it WILL make you run rich if you don't, at the very least, have an adjustable FPR to tone it down some. __________________ www.360realms.com/S13-S15

12-15-2003, 12:40 PM	#4
nnkfws333 Join Date: Oct 2002 Location: Orlando, FL Age: 42 Posts: 27 Trader Rating: (0) Feedback Score: 0 reviews	I was wondering, doesn't the ecu adjust the A/F mixture?

12-15-2003, 09:35 PM	#6
kickertu Zilvia Junkie Join Date: Jul 2002 Posts: 377 Trader Rating: (1) Feedback Score: 1 reviews	run the car, and then pull the plugs, and get a flashlight to see if there is gas in the chamber.... if its alot, let it evaporate out,... then unplug the injectors, and turn the car over.. if you are still getting fuel in the chamber, then you have a leaky injector... i had one... it SUCKED!!! couldnt figure out what was going on to save my life... until the whole cylinder filled with gas.... if you have q's message me aim- kickertu [email protected]