This engine has 140K on it.
A few things to note:
1. Carbon at the entrance of the port not removed since fuel is not coming into contact at that point.
2. Baked on carbon on the intake valve that anything short of new valves or a bench grinder will not remove.
3. How fricken crazy good E85 works to clean your engine!!
I wonder what my piston tops and exhaust valves look like.
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