what makes it runny REALLY rich

ProKiller

Founding Member

Apr 26, 2002

3,064

15

78

PA

Apr 26, 2004

#1

• Apr 26, 2004

• #1

i first thought the o2s. i got two new Bosch o2s and it still loads up like a mofo. all air connections are good. i cleaned the mass air. ohm tested the IAC, it was good. in the process of cleaning it now. all the vac lines are good. i don't know what else to check. PLEASE HELP ME!!! i'm getting very very frustrated.

 

ShiftTheDrift

New Member

Dec 16, 2002

365

0

0

Bakersfield, CA

Apr 26, 2004

#2

• Apr 26, 2004

• #2

Well, the first thing that comes to mind is fuel pressure.

For stock platforms, I'm gonna figure the pressure should be somewhere between 30 and 35psi.
Looking at your signature, I'd do a little research first.

If you have a gauge, it's easy, if not, I suggest getting one.
The gauge will replace the schrader valve on the fuel rail.

And of course, until you get it fixed, it's better to run rich than lean.

Good luck!

 

ShiftTheDrift

New Member

Dec 16, 2002

365

0

0

Bakersfield, CA

Apr 26, 2004

#3

• Apr 26, 2004

• #3

Let us know what you come up with, I'm courious...

 

ProKiller

Founding Member

Apr 26, 2002

3,064

15

78

PA

Apr 26, 2004

#4

• Apr 26, 2004

• #4

fuel pressure is fine. its at like 38. same as what it was when it was running fine. i just took the upper intake off to see if there was a vacuum leak, and damn, fuel came pouring out the fitting at the back. i think maybe an injector is stuck open. anything else guys?

 

ProKiller

Founding Member

Apr 26, 2002

3,064

15

78

PA

Apr 26, 2004

#5

• Apr 26, 2004

• #5

EUREKA!!!! Aeromotive adjustable fuel pressure regulator is bad. the vacuum line shoots out gas right into the upper intake. we unplugged the coil and cranked it over to see if an injector was stuck open, and my dad got a chest full of gas from the hose squirting. prolly get a BBK regulator tomorrow.

 

AznStanger3v

Active Member

Aug 11, 2003

2,026

0

47

Northern VA

Apr 26, 2004

#6

• Apr 26, 2004

• #6

damn, that sucks for your dad. awesome you found it. thats crazy. i wonder how it was stuck like that.