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

At #1 & 2 spark plug, there were noticeable amount of engine oil around the HEX bolt section.


During the Health Check last year, I also noticed significant amount of engine oil seepage at the rear bank exhaust bank.


Based on these, it looked like the valve cover gasket, spark plug hole seals, etc were not replaced during the last TB service.

Finally, I’m happy to put back the plugs and IGN coils and time to warm up the engine for the compression check.

All data in [psi].


The full data will be passed only to the owner.


Cyl 1: **5, Cyl 2: **2, Cyl 3: **1
Cyl 4: **9, Cyl 5: **5, Cyl 6: **0


There were some deviation and #4 cyl was lower than others so looks like the valve clearance was not carefully adjusted during last TB service or it could be not done at all.


Just keep removing the parts and draining the coolant at the moment.

Pretty much most of the things were removed from the upper side of the engine.


I’m going to keep the valve covers on for the time being as I’ll be first replacing all of the coolant hoses first before performing vacuum check for the WP service.


Don’t want to keep the engine open while working on the cooling system…


More to follow.

Kaz