i have a 90 civic hatch back and put a d16y8 swap with a p28 into it. started it up and it runs extreamly rich. i checked the codes and the o2 code came up. i bought a new one and its still there. im thinking its how rich its running. i hooked up a fuel injector gauge and im getting arounds 45psi. i cant figure out why no codes are coming up and why its running like this.

 

Do you have the vacuum hose connected to the small port on the fuel pressure regulator? With engine running at idle fuel pressure should be like 38 not 45.

 

How do you know that you are running rich? Do you have a wideband and gauge set-up?

 

yes i have that vaccumm line hooked up when i take it off it runs better because it keep up with the amout of fuel. and it burns your eyes so bad when u have it runnin that how i can tell how rich its running

 

when i did the test i had it at key on and it was at 45

 

LOL, that is a horrible way of determining if your car is running rich. Pull the spark plugs. Maybe a fuel seal is seeping, and that is what you are smelling?

 

if i let it run for a little and pull the spark pluges out they are soaked..

 

Is the timing correct? Is the ECU chipped or a stock tune? Are you using stock injectors?

Removing the vacuum hose increases fuel pressure, which would make it run richer, so it shouldn't run better that way.

 

thats what im thinking i need to check the timing and also im not sure about the ecu it might be i dont know how to tell if the chip was burned or not. or i was going to buy an adjustable fuel regelator for it..and yes they are stock injectors.

 

Does anyone know how to tell if your computer has ben chipped