Here's my story: 90 GT40 crate motor in my 87. After pulling the motor my dog ate/chewed up the wires on one of the O2 sensors. Found (what I thought was a deal. Should have inquired more) an O2 sensor for 10 bucks shipped. When it arrived it was different that what I had originally had.
the one that came out of my car is the stubby looking one and the one I bought looks like a sealed cylinder w/those tampon looking cuts at the tip.
Now, I have a little bit of fine tuning to do, but when I pulled the plugs to give them the correct gap the drivers side plugs were nice and clear. The pass side (where the O2 sensor I bought is put) look black like that side of the motor was running rich.
Is the O2 sensor the cause or do I just need to take care of my fine tuning issues first then check plugs later????
Linear Mode
