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1. 

   1fz spark plug loosening

   Sounds like someone over tightened that plug at some point and the threads are stripped. You could chase the threads with a tap. Or try putting teflon tape on the plug. Or install a heli-coil.

   • Words: 36
   • LandCruiser65
   • Post #3
   • Jul 30, 2022
   • Forum: 80-Series Tech