Spark plugs don't really burn out, they foul out. A spark plug is used to ignite the fuel/air mixture squirted into the cylinder by the fuel injector. The plug sends a spark and boom small explosion. However gasoline is not 100% clean, so it leaves carbon deposits on the plug. Over time these deposits foul the plug.
Normally when there is oil deposits on the spark plugs you need to have some work done on the valves, preferably the valve seals, but should do a complete valve job to make sure everything is at specs.
Fouling spark plugs can happen when the tip temperature is insufficient to burn off carbon, fuel, oil or other deposits and causes spark to leach to metal shell...no spark across plug gap will cause a misfire. Wet-fouled spark plugs must be changed as they won't fire. Dry-fouled spark plugs can sometimes be successfully cleaned by bringing the engine up to the operating temp.
There are many different possibilities. Could be low octane fuel, carbon deposits built up on the tops of the pistons, wrong spark plugs, computer timing problem, etc.
Engine knocking can be caused by numerous things. Having the incorrect spark plugs, carbon deposits on the cylinder walls, and being low on engine oil may all cause a knocking sound.
Spark Plug FoulingUsually there are two main causes of spark plug fouling:The engine is worn, and loose fitting parts allow engine lubricating oil to get into the combustion chambers [cylinders]. The oil then gets onto the spark plugs, and is "cooked" on.Another possibility is that the fuel mixture is way too "rich," causing incomplete combustion which deposits carbon and lacquer on the plug tip.
when do you change spark plugs
the transmition ,is probably not adjusted to the spark plugs,or their not the right spark plugs
Take old spark plugs out put new spark plugs in
2002 galant , can't find the spark plugs
4.7L has 8 spark plugs. 5.7L has 16 spark plugs.
It doesn't carry spark plugs but it has 6 spark plugs installed in the engine. The only internal combustion engine that does not have spark plugs is a diesel.