Jerry's Auto RepairJerry's Auto Repair

All Makes and Models: US • European • Asian
1260 South Grand Avenue, Pullman, WA 99163 • 509-334-7215

Broken Spark Plug is Cause of Mystery Noise…

This spark plug was removed from a late model Toyota Corolla 4 cylinder engine. The customer was concerned about an extremely loud noise coming from the engine. As it turns out the noise was caused by the top half of this broken spark plug moving up and down as the the cylinder cycled between high and low pressure. Also there was a fair amount of noise caused by air rushing past the broken ceramic top of this spark plug.


  1. Can you describe the noise? Was it like a ticking or rattle? I’m wondering because I think I might be experiencing something similar.

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