fouled spark plugs in 10,000 miles?
I think I have fouled my spark plugs already! They were the AC Delco rapid fire plugs. I think it might have happened when I ran throttle body cleaner in the throttle body, and sea foam through the vacuum system. still, is this possible to foul them that soon? Just asking because my gas mileage has gone from 28/29 to only 24/25 with no change in my driving habits. Just trying to get the best mileage possible and hoping it'* just something as simple, and as cheap as spark plugs. The 02 sensor is less than a year old, so I'm hoping that'* not it..