Unless the O2 sensor is malfunctioning, leave it be. 
Carbon and lotttssss of it!!!!
OK so I have "BIG BOB'S" pipes and the tune that "Big D" help makeup.Thank you B and D. But the bike has a carbon thing that is
pretty bad I only get about 10 or less starts out of it.Then
I change the plugs and it starts right up. So last night I had to pull
them and it looks like the piston are very black. I called a boat
place and they have the spray stuff "power tune". I'm going to
spray the pistons tonight and let do its thing for 24hrs and refire
it. Should I replace the O2 sensor? I'm also going to have it dyno
done on it in two weeks.
pretty bad I only get about 10 or less starts out of it.Then
I change the plugs and it starts right up. So last night I had to pull
them and it looks like the piston are very black. I called a boat
place and they have the spray stuff "power tune". I'm going to
spray the pistons tonight and let do its thing for 24hrs and refire
it. Should I replace the O2 sensor? I'm also going to have it dyno
done on it in two weeks.
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