If your plugs are fouled, it means that they have a lot of carbon built up on the electrode. As gas burns in the cylinder, it leaves carbon that over time, builds up on the plugs. It's normal and nothing a good tuneup won't fix.
oxygen sensor
old gas or fuel mixture needs adjusting
Fouls
NGK number CR9E If your engine fouls plugs on a regular basis, the next step hotter plug, CR8E may help the plugs last longer.
It means the % of fouls there are in a game
The singular form of fouls is fouls.
It means if your team gets 4 fouls in a quarter then you will shoot 2 free throws the rest of the fouls
2 technical fouls and 6 fouls
Team fouls are the total fouls that all the players together committed. Personal fouls are each player individually.
over 600 fouls
Check your premix ratio, carb jetting and make sure you are running the right spark plug.
In most leagues it is 5 fouls until you are out. However, in some tournaments they can make up whatever rules they want so any number of fouls. But basically it is 5 fouls. -Kristen (I have played basketball for 6 years)