Why is it doing this??
I just bought an '86 325e from a friend of mine. when i bought it, it ran fine. i've been doing some minor interior mods (drivers seat, glove box, body panels etc.) i was driving it the other day, when it started to run really rough, the temp went up a little bit, but nothing extreme, and it felt like i had no power. he mentioned that he did replace the plugs cap and rotor and coil, but he had yet to replace the plug wires and they are still the original wires. is this the cause, or is it something more serious???