15-09-18, 10:27 AM
a video of the noise would be very helpful. you could try the screwdriver against your ear trick. press the handle to your ear and the pointy end to different parts of the engine. you should be able to hear where the noise is coming from through the screwdriver. you can quieten the exhaust if you hold a rag over the end can. if it is cam chain noise, some people have had luck advancing the tensioner by removing the plugs, putting the bike in gear and pushing it backwards. it's supposed to create a bit of extra slack on the slack side of the chain which allows the tensioner to advance.