Costco (also amazon dot com) sells a fiberoptic camera for $130 (similar to colonoscope that doctors use to look at bowel).
This camera has multiple purposes. it allows to inspect engine pistons etc. etc.
- Octane 87 does not do this.
- The common causes of carbon build-up on top of the pistons:
a. Mixture too rich
b. bad spark plugs create incomplete combustion
c. Oil consumption, in your case it could be a blocked CCV.
Last edited by cn90; 11-23-2011 at 08:52 AM.