I just recently rebuilt my engine. Sleeved it, pistons, rods, etc. But now it runs way rich. So I took out the 450 injectors and put in the stock ones. Still pig rich and when you give it any throttle it falls on its face. I swapped out the fpr with another one hoping it was that. No difference. No codes show up. So I assume everything is running right. Any ideas would be helpful.

 

setup?

 

The engine was sleeved and bored to a 2.0 liter (84 mm), 9.2: 1 compression, i think, I'm pretty drunk right now, whatever stock is. Eagle rods (STOCK), The ecu is stock ad so are the injectors, it did have a safc on it. i heard they can mess up ecu's. I don't know. Any ideas?

 

I pretty recently rebuilt my motor as well. Similar setup to you, b20/vtec, 11:1 compression, yada yada, but i had similar problems to you. What ecu are you running? You say stock, but stock what? p28, p72? What kind of fpr are you running, what fuel pump, did you set your timing? Assuming you are running p72, you should actually be running a little lean, if you are rich, timing might be off or any number of other problems. Lastly, how do you know it's running rich? Do you have a wideband hooked up to it?

 

It's a p75 and yes I have a wide band. Maybe the timing isn't right, but I remember being very cautious when putting on the timing belt. I'll check to see that.

 

I was referring more to ignition timing but sounds good. If you are running a stock p75, you should actually be lean with that setup, what is your fuel pressure set at?