S13 SR20 Running super rich, tried everything. HELP!

[KiKYoAsSStYLe]

Hi Guys,

I'm going crazy since I can't get my SR to run properly. I just swapped it about a week ago. It's a 95 240sx with a s13 Redtop. The car spews out lots of black smoke, so I replaced the MAF and same thing. I switched out the fuel pressure regulator and same thing. When I pinch the fuel line it idles properly. As soon as I let go it bogs and starts with the black smoke again. I disconnected my air filter and plug it with my hand with let some air pass by and it runs properly. I'm kinda new at this so any help would be greatly appreciated. Do I need to reflash my ecu? I'm not getting any check engine light. Help! Thanks!!!

[NISTECH]

Sounds like a bad airflow meter to me. Is the replacement new or used? may be your problem. check your ground with a volt meter.

[KiKYoAsSStYLe]

I changed the maf twice but they were both used. One of them was taken from a running motor. Do you know where I can get a new s13 maf? To check the ground wire, which color is that? Does it have anything to do with the ECU? Thanks again!!!

[NISTECH]

The black wire is your ground. you check it plugged in. You do have the SR20 ECU and MAF installed right?? As oopsed to the Ka stuff.

On the ground you are looking for less then.2v with the engine running.