Changing spark plugs

[Ah GetFd]

Yes, a faulty coil pack can absolutely cause the ceramic insulator on a spark plug to crack, along with causing electrode erosion, heavy fouling, or melting due to overheating and misfiring. A malfunctioning coil can produce excessive voltage (over-voltage stress) or cause extreme thermal stress, which damages the plug.

Fair enough.

A coil is just a lump of wire.

The more turns there are the more voltage you can develop when you collapse a magnetic field across it. And you can control it by the number of turns of wire you put in it. You can't generate more voltage than the number of turns of copper are there.

What can happen however if a coil is not working properly is that the spark plug wont work at all. The spark plug can then foul up. A spark plug may crack if there is excessive heat generated in the cylinder. Thats a possibility.

I am just stating a fact. Its not "high voltage" cracking a spark plug. They are designed for high voltage.

As AI will tell you.............spark plugs fouling, closing the gap, shorting to frame, short out coils....not the other way around.

So if your coil pack fails it is most likely the spark plug caused it. Change both

 

[Ah GetFd]

Well now. Ignorant "unwashed" masses remain ignorant when the experts argue/debate what the heck is going on. Heh!

At least I can go take a bath.

You are a stupid old buffer and I have told you that many times

 

[Snicklefritz]

So if your coil pack fails it is most likely the spark plug caused it. Change both

Yes, and if the coil is now bad, it will kill each spark plug that you put in, quickly. That is what I described. So, why did we have this back and forth?