Today at Atelier Kaz - ex-Honda R&D, F1, Indy/CART engineer

After inspecting the TH body area during the compression check, decided to give it a thorough cleaning as the coolant was drained any way.







VVIS butterfly screw inspection with the endoscope.









Should have used the different background as the exposure level got too dark.

IAT sensor covered in debris.

Cleaned and installed with the new o-ring.







Later, adjusted the base idle air and if the TH body is thoroughly cleaned and with the healthy engine, you should be able to even idle at just below 600rpm.