Do New Spark Plugs Make A Difference If The Car Runs Fine

There are 4 Answers for "Do New Spark Plugs Make A Difference If The Car Runs Fine"

1. Chris G says:

   Probably not. A four electrode spark plug is a cool idea in theory, but electricity takes the shortest route, so it will jump to the closest electrode, not all four at once. I think it is just a gimmick.
2. Vikram T says:

   Well it creates less pollution and creates improves the millage
3. Demoman76 says:

   Yes new sparks plugs are a good idea that they will help u burn more fuel uping your fuel mileage so u could go farther on a tank of gas also replace wires while u are at it as they start to break down not send all the voltage to the new plugs
4. Fred C says:

   Depends. If the existing plugs are not more than a few thousand miles in service, and were gapped properly to start with, they would make a little difference, but not enough to pay. If you are due for plug change anyway, they will definitely help.