It is made up of aluminum oxide ceramic and acts as an insulator.
Ceramic part of spark plug brown.
Dirt or moisture on the outside of the spark plug that provides a conductive path to ground or an internal crack in the spark plug s ceramic insulator that shorts the plug to ground also can be the culprit.
The higher the.
It separates the central electrode from earth at up to.
A wet spark plug likely means that it hasn t been firing due to engine flooding or a bad ignition cable.
Appearance center electrode and ground electrode are bent out of position down or to one side of the spark plug.
Look at end of the spark plug that was in the cylinder and examine it.
Some spark plug samples used and how to tell just how well your car or trucks engine is performing.
There is carbon on the plug shorting it out.
Take the spark plug in your hand and begin looking at it for signs of damage.
You can clean the spark plugs or you can just wait for them to dry out.
Overly rich fuel air mixture dirty air filter too much driving at low speeds or idling for a long time.
There are two main reasons that a spark plug will not fire well if the voltage is present for a good spark.
Check catalog for proper spark plug application.
It is the portion that is connected to the high tension cable coming from the distributor cap.
It conducts the high voltage to the central electrode.
Just clean and regap the plug.
The main parts of a spark plug are.
Oil may also be pulled into the chamber because of excessive clearance in the valve stem guides also if the pcv valve is plugged or inoperative it can cause a build up of crankcase pressure.
Spark plug color oil fouled.
Black dry fluffy soot on insulator tip and electrodes.
The gap is not set properly.
Follow these instructions on how to remove a spark plug.
Too much oil is entering the combustion chamber.
The result will be a slow rate of burn.
The first step is removing the spark plug you want to look at.
Ceramic tip is broken and missing from the firing tip.
A normal spark plug will have brown or grayish tan deposits on the side electrode.
The gap if the gap on the spark plug is too close there isn t enough spark exposed to the fuel air mixture.
You will likely see one of the following conditions.
Caused by piston rings or cylinder walls that are badly worn.
Switch to hotter plug.