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04 R1 Left side / front engine noise

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I hear this engine slapppy noise on the left side of the engine .It really doesn't do it at idle and doesnt hold steady with RPM's . It seems to be on throttle blip and lower RPM stuff. I have researched using the search bar and nothing identical is here. So where should I begin.

1) I was thinking CCT but thats the right side

2) Possible dead plug but it only does it lower rpm and allows me to rev through it.Would a plug stop working under a light load or a coil pack ?

3)Piston slap or wrist pin bearing . I am assuming that the noise would be constant instead of sparatic slapping

Help a mofo out . I just bought this bike and it really sounded like a header leak at inspection :sing:

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