What can bad spark plugs and wires do?

Answer:
The first thing you'll notice is bad gasmileage that gets worse! Hard starting, then there will be misfire and rough idle, loss of power and eventually the engine will not start. The price of the new plugs and wires will be offset by the savings in gas!
First answer by Datsunlover. Last edit by Datsunlover. Contributor trust: 19 [recommend contributor recommended]. Question popularity: 1 [recommend question].