Running extermly rich NEED HELP!!!!!! - 3000GT/Stealth International Message Center

yask4it · 07-20-2008, 11:20 AM

Ok well the car is 91 r/t with the tt conversion done to it when I bought... The said it has the vr4 ecu and injectors and fuel pump and intake.... When I bought the car it had spun bearings.... I just got done with the rebuild on the motor and got it running... Starts and idles great after some ajusting of the idle... Took it out for a test drive and the car loads up on fuel and pours black smoke out the exhaust... I can't seem to figure out why it is so rich.... I have checked all the pipeing and everything is tight and double checked all plugs where hooked up and maken good connection... When I pulled the plugs out that were in the car when I bought it they were black... I was wondering if this maybe caused do to no tuning capiblty.. Do I need to get a data logger and a safc befor I can get it right? Any help on this would be greatly apperciated....

Here is a list of what I know is done to the car...

Stock internal r/t motor
tt setup
stock intercooler setup with after market y-pipe and rfl bov..
Stillen down pipe
gutted rear cat
stock turbo exhaust
vr4 ecu
vr4 injectors
vr4 intake
vr4 fuel pump
stanless preturbo intakes
k&n cone filter

gipper72488 · 07-20-2008, 07:25 PM

hmmmm i think the bov could have something to do with that. its located after the maf correct? if so when the bov vents to the atmosphere, the motor will lose air that it has already metered. and you will have an excess amout of fuel. not saying its the complete problem, but it could have something to do with it

yask4it · 07-20-2008, 07:31 PM

it does it when giving it gas not when u let off the gas....

gipper72488 · 07-20-2008, 08:35 PM

yes, but when you let off the gas to switch gears, it will vent, leaving an excess amount of fuel, then you go and floor it again, adding even more fuel.

im not saying that it is your complete problem, and even if it is, a good tune should fix it.

with a TT ecu, you should have no trouble tuning it with a safc2.
check the vaccum to the fpr, if its not getting any vacum it should be wide open.

rush6432 · 07-21-2008, 12:40 PM

are you sure it even has a tt ecu in it? o2 sensors hooked up properly? sure the injectors are 360s??? id suggest you stop driving until you figure this out unless you want to rebuild the motor again.

yask4it · 07-21-2008, 02:22 PM

I have not drivin the car... It is a automaticeso it doesn't blowoff well switching gears... I am postive that it is a tt ecu and tt injectors..... The carwas orginally done by IAperformance....

The fuel pressure regulator is hooked up to the vacuum port on the back of the intake....

green-lantern · 07-21-2008, 06:38 PM

you need a SAFC or equivalent, data logger, wideband O2 sensor with gauge, and a leak tester for the intercooler pipes.

green-lantern · 07-21-2008, 06:41 PM

btw with the rebuild you don't want to be running real rich because your rings might not seat.

yask4it · 07-22-2008, 03:38 PM

I am not driving or running the car for very long till I figure this out...
So what I am coming up with is that this more then less a tuning problem CORRECT....

If anyone has any ideas on what to check let me know....

green-lantern · 07-22-2008, 03:46 PM

Quote:

Originally Posted by green-lantern

you need a SAFC or equivalent, data logger, wideband O2 sensor with gauge, and a leak tester for the intercooler pipes.

there's really nothing I can tell you until you get these things. maybe someone else can help but I really don't know where to start other than start checking their work.

07-20-2008, 11:20 AM	#1 (permalink)
yask4it Forum Member Join Date: Mar 2008 Trader Rating: (2)	Running extermly rich NEED HELP!!!!!! Ok well the car is 91 r/t with the tt conversion done to it when I bought... The said it has the vr4 ecu and injectors and fuel pump and intake.... When I bought the car it had spun bearings.... I just got done with the rebuild on the motor and got it running... Starts and idles great after some ajusting of the idle... Took it out for a test drive and the car loads up on fuel and pours black smoke out the exhaust... I can't seem to figure out why it is so rich.... I have checked all the pipeing and everything is tight and double checked all plugs where hooked up and maken good connection... When I pulled the plugs out that were in the car when I bought it they were black... I was wondering if this maybe caused do to no tuning capiblty.. Do I need to get a data logger and a safc befor I can get it right? Any help on this would be greatly apperciated.... Here is a list of what I know is done to the car... Stock internal r/t motor tt setup stock intercooler setup with after market y-pipe and rfl bov.. Stillen down pipe gutted rear cat stock turbo exhaust vr4 ecu vr4 injectors vr4 intake vr4 fuel pump stanless preturbo intakes k&n cone filter

07-20-2008, 07:25 PM	#2 (permalink)
gipper72488 boosted Join Date: May 2007 Location: G-town NC Drives: 1990 gsx eclipse Trader Rating: (0)	Re: Running extermly rich NEED HELP!!!!!! hmmmm i think the bov could have something to do with that. its located after the maf correct? if so when the bov vents to the atmosphere, the motor will lose air that it has already metered. and you will have an excess amout of fuel. not saying its the complete problem, but it could have something to do with it __________________ I <3 booost. 90gsx. 3inch turbo back magnaflow exhaust,K&N, shortshifter, stage 2 clutch, mbc at 16psi

07-20-2008, 07:31 PM	#3 (permalink)
yask4it Forum Member Join Date: Mar 2008 Trader Rating: (2)	Re: Running extermly rich NEED HELP!!!!!! it does it when giving it gas not when u let off the gas....

07-20-2008, 08:35 PM	#4 (permalink)
gipper72488 boosted Join Date: May 2007 Location: G-town NC Drives: 1990 gsx eclipse Trader Rating: (0)	Re: Running extermly rich NEED HELP!!!!!! yes, but when you let off the gas to switch gears, it will vent, leaving an excess amount of fuel, then you go and floor it again, adding even more fuel. im not saying that it is your complete problem, and even if it is, a good tune should fix it. with a TT ecu, you should have no trouble tuning it with a safc2. check the vaccum to the fpr, if its not getting any vacum it should be wide open.

07-21-2008, 12:40 PM	#5 (permalink)
rush6432 Spins all 4 Join Date: Apr 2002 Location: Austin, TX Trader Rating: (15)	Re: Running extermly rich NEED HELP!!!!!! are you sure it even has a tt ecu in it? o2 sensors hooked up properly? sure the injectors are 360s??? id suggest you stop driving until you figure this out unless you want to rebuild the motor again.

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07-21-2008, 02:22 PM	#6 (permalink)
yask4it Forum Member Join Date: Mar 2008 Trader Rating: (2)	Re: Running extermly rich NEED HELP!!!!!! I have not drivin the car... It is a automaticeso it doesn't blowoff well switching gears... I am postive that it is a tt ecu and tt injectors..... The carwas orginally done by IAperformance.... The fuel pressure regulator is hooked up to the vacuum port on the back of the intake....

07-21-2008, 06:41 PM	#8 (permalink)
green-lantern cyber bully Join Date: Aug 2006 Location: tennessee Drives: like an idiot Trader Rating: (17)	Re: Running extermly rich NEED HELP!!!!!! btw with the rebuild you don't want to be running real rich because your rings might not seat.

07-22-2008, 03:38 PM	#9 (permalink)
yask4it Forum Member Join Date: Mar 2008 Trader Rating: (2)	Re: Running extermly rich NEED HELP!!!!!! I am not driving or running the car for very long till I figure this out... So what I am coming up with is that this more then less a tuning problem CORRECT.... If anyone has any ideas on what to check let me know....