[UpInTheLex]

Just some food for thought.

I just disassembled my 198K mile 1uz and I noticed a few things.

A lot of the plastic connectors near the block such as knock sensor connectors and fuel injector connectors were VERY brittle.

The most alarming thing is the 2 wiring harness connectors from the cam angle sensors and the front of the motor that run under the plastic cover next to the 1st injector on the drivers side of the motor had melted down at some point and when disconnected I found burned wires and the plastic connector crumbled into many peices.

Also notable were where my injectors seal on the lower intake. These seals were very hard like plastic, not rubbery at all anymore. I'm wondering if air was able to pass by around the injectors seals under high vacuum conditions such as sudden throttle tip ins.

No CELs, Clean intake ports and injectors and I would get the slight hesitation that the SC400 seems to always have.