View RSS Feed

Today at Atelier Kaz - Private NSX Enthusiast, ex-Honda R&D engineer with F1, Indy/CART background

Eng Refresh, Health Check, etc 05

Rate this Entry

Very strange extra gasket at the spark plugs.

#1, #2 cyl were not burning well.
Lots of carbon dust although the photo doesn't show the level accurately due to white balance and the shade caused by the light.
#3 cyl was also not burning well but better than the above two.

As all three cyls are at the rear bank, interesting to see what is causing this.
May need replacing at least rear O2 sensor.

Even with the new spark plug and new IG coil at #1cyl, after the test driving session, still #1, 2cyl were showing lots of carbon stain with #3cyl showing lower but enough to notice carbon.