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Plug Wires?
Just aquired a '95 Aurora that runs rough. I figured something electrical. Maintenance records show that the plugs were replaced 6 months ago, as were the coils. When I unplug the spark plug wires on cylinders 1 and 4 while the engine is running, nothing happens. If any other wires are unplugged, the engine slows down and runs worse. If the wires are switched (cylinders are fired in pairs, so you can switch them with the paired cylinder), the new cylinder with the old wire does not have spark. I’m 99% sure it’s the wires, but I just wanted to verify before I spent $120 on new wires. Anyone have a similar problem, or a suggestion?
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