Is Broken Spark Plug Risky?

Hello, friends, I wanted to change the spark plugs before winter. When the master touched all the wires, one of them sparked excessively and said, "This spark plug is broken, they left it unscathed". In the city we live in, there is no one who produces broken spark plugs, but the top cover, that is, the cover up to the gasket, needs to be completely removed, said the master. He said that if the spark plug tip falls on the piston, you will eat the engine. But if it has not fallen by this time, I think it will not fall yet, he said. There was a turner in the neighboring city, he could open and get a manual. The master said that you can use it like this, it's up to you. I didn't know what to do guys. what do you say

if it gets stuck in the piston, it will be a big expense, go and have it removed

I had it removed today, friends, it took 30 minutes to remove the broken one. The remaining 3 were not broken, but one was fused. It broke while trying to get it out. This took exactly 1.5 hours. We worked from morning to night, and I paid 800 TL.

What I don't understand is the spark plug was broken and how it gave no indication. A broken spark plug means no ignition in one eye.

No, this is a glow plug, sir, it's a glow plug that gives off heat for a few seconds to help the engine start under -4 degrees. So not spark plugs like gasoline.

Got it now