[tsrracing]

I bought a 94 mustang gt that I need help with. Changed the pluges wires and cap. Checked timing to. The car runs rough and has a power loss. It acts like it is miss firing and smokes black when u crack the throttle. It has bbk headers and exhaust. Did a test and came up with these codes 136 ho2s sensor fault always lean. 172 ho2s sensor fault/lean. There is no o2 sensors in the exhaust The person B 4 me put metal plugs in them. I found one o2 plug harness on the passenger side but not one on left. Where could I find the wires or where do the o2 harness hook up under he hood. I need help to get this going u guys.

[FordmanT]

Without O2's it will always default to lean and the black smoke is fuel so without the O2's it'll never run right. Just gonna have to dig around the engine compartment for the other sides