Broken Spark Plug Ceramic

As the title suggests i encountered a broken piston ceramic sheath shield as shown below.

Broken spark plug ceramic. When i was taking them out 3 of them broke. If you exceed the recommended torque the shell can shear off below the hex. You could also put a propane t. Btw the heat in the combustion chamber will not melt or in any way damage the broken bits of ceramic insulator.

Small piece of porcelain from spark plug dropped into combustion chamber. Ninja rocks are broken shards of spark plugs that are formed by smashing the ceramic portion of the spark plug with a hammer or other large object. The construction of a spark plug shell is like a hollow bolt. Checked all wiring coils and plugs on cycl4 and low and behold about half of the ceramic sheath was.

The owners remove all of the plugs throughly clean the threads and clean out the bores replace the plugs and plug wires and the problem goes away. Initially encountered misfires on cyl 4 on wot however car ran fine if i didn t go into boost. If that s the case you should be able to partially drill out the middle of the plug and use an easy out screw extractor. I can not prove that the spark plug broke my crank but i am pretty sure that is what happened.

Since they can quickly and quietly fracture the glass side windows on most cars ninja rocks have been used in smash and grab auto burglaries since at least 1995. They have no traditional association with the ninja or ninjutsu only being named. If excessive force is required to remove the plug it could be traced to one or more of the following causes. Therefore its highly likely the bosch answer is correct as dirty plug threads would cause problems with electrode grounding.

That is the whole point of using ceramic for the spark plug insulators.