09-05-2018, 03:39 AM
There are two other causes of carbon buildup that can be owner induced.
First, higher octane fuels do not burn as quickly and will lead to more carbon buildup over time. They don't produce more power, and you're not doing the engine any favors to "treat it to" higher octane.
Second, when the bike is just started up cold, the ECM is on a richer cold-start mixture, which is fine. Blipping the throttle gives an extra-rich mixture that doesn't burn completely, and the cylinder walls get washed with unburnt fuel that can wash oil film off the cylinder walls and cause some of the scuffing on the pistons and bores.
First, higher octane fuels do not burn as quickly and will lead to more carbon buildup over time. They don't produce more power, and you're not doing the engine any favors to "treat it to" higher octane.
Second, when the bike is just started up cold, the ECM is on a richer cold-start mixture, which is fine. Blipping the throttle gives an extra-rich mixture that doesn't burn completely, and the cylinder walls get washed with unburnt fuel that can wash oil film off the cylinder walls and cause some of the scuffing on the pistons and bores.