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(Another) Engine Noise Question

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Hi all - my '03 S with 12000 miles and stock engine (with the exception of the Dynojet/Airbox mod) has started making a knocking type noise. I know it's not possible for any type of accurate diagnosis without hearing it for yourselves but I'd welcome some comments on what the cause may be. What I've noticed is that the noise is barely noticable when starting from cold but becomes more audible when the engine is hot. Engine seems to be a bit down on power and a bit rougher. She's had regular oil/filter changes. /Thanks.....Alex

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Same questions.. same answers. :cry:

.. have you checked the valve clearance lately? Hoping you are not waiting for the manual 15k first look :cry:

Have you added a skid plate recently? Changed fuel type or source? Changed riding altitude? Has the weather changed significantly?

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