Okay so my car is running a bit weird. I am getting very poor fuel economy and today when the car was still a bit cold not at running temperature yet stalled from taking off at a light. I think the car is running too rich. It seems when its cold and I give it some gas it takes a nose dive and then gets moving. I also don't think it has that much power. Which why I believe it is running rich and not getting the correct air to fuel ratio. Anyways, I wanted to try to figure out how to correct that in my e34? The plugs are new and the wires are new the cap and rotor are new the fuel injectors have allot of miles on them but im not sure. I have no maintenance records, I just rebuilt the motor about 500 mles ago. The fuel that was in the car was really old and some may have run through the engine. Any help is appreciated.