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2000 Toyota 4Runner SR5, Ignition Photo
Posted to the Waveform Library on 8/11/2013

The spark plug on the right was removed from a cylinder that was obviously misfiring. We concluded that the spark plug was not torqued properly which caused it to overheat allowing the center electrode to fall out and go through the engine.

Scott Brown
Claremont, California, USA


car Vehicle Data

2000 Toyota 4Runner SR5 3.4L

Engine3.4 L / 6 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
ConditionKnown Bad