How Spark Plugs Can Improve (Or Devastate) Your Fuel Economy

As you may know, spark plugs play a very important role inside a gasoline internal combustion engine. Since they are a key player in the combustion event, the chances of them getting degraded are relatively high, especially as the engine ages. Factors like carbon buildup (often from oil leaking past the piston rings) and electrode wear can affect ignition quality and, in turn, fuel economy.
If you suspect fouled spark plugs, chances are your engine is likely experiencing inefficient combustion. If the intake charge isn't burning