Running rich what to do?

[blackgn231]

I just got my new motor running and its running rich still need to check fuel pressure have set every thing with a direct scan 2.1 its not showing any codes so if pressure is not it what else should I check? O2 sensor? anyone thanks .

 

[Murt TTA]

u should start by checking your fuel pressure... if its way to high then thats most likely your problem.

but running rich could be a result of any combination of things that controls fuel or spark...

but most likely: high fuel pressure, wrong chip, spark plugs, bad maf, bad o2 sensor, just to start...

check fuel pressure, and u should really put a new a/c delco o2 sensor in if u just did your engine. what chip are u using?