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Help please.

My 900R (A6) started making a rattle when under load between 1,500 and 3,000 RPM. (20-30 mph in 3rd gear) It sounded like it was coming from the back of the engine at the top rear but no rattling occurred if reved up in neutral.

After checking valve clearances, spark plugs, carb balance, etc., someone suggested that it may well be the carb slides rattling in the bodies. I changed the carbs for a newer set and learnt a few carb related things along the way but it only seem to have made it worse. The bike now runs better than before but the rattling is worse. I know that with second hand carbs I could have another worn set but am I missing something ?

If anyone else has had a similar problem please let me know.


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