1988 Isuzu Trooper, 2.6 freshly rebuilt. It's Running extreamly Rich, Very Very Black build up on tail pipe. Now I know something Is missing in the engine bay that I think should be there. Ok, its on the passenger side up almost on the fender and it looks like another fuel regulator but Im really not sure. Looks as though 3 hoses go to it. almost strait accross from the fuse box under the hood. I have no idea what goes there and what the part is called, will the little piece affect the richness at all?? if you dont know what im talking about ill try and get a Pic to show you guys, maybe I wont have to. The smell is so bad It makes your eyes burn and I know it will never pass Emissions If I ever took it to do so. LOL <img src="/forums/images/graemlins/lol.gif" alt="" />