I havent heard of it nor seen any Toyota engine do that in 30 years I been working on them. Mostly truck and Camry engines I dealt with.
Only issue that was persistent all these years was getting the engine too hot are warping the aluminum heads causing head gaskets leaks. Interesting one indeed. Thanks for sharing and keep us posted.
Sent from my SM-J337V using Tapatalk
__________________
7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread:
https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer:
https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information:
https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html