bigborer
Site Supporter
I did fully remove the airbox from the bike, and tried to locate the noise with a stethoscope, but had no luck with that.
Today I did remove the top engine cover and discovered the following:
-chain appears to be too worn out
-exhaust cam appears to have skipped a tooth, in the picture the crank was at tdc
-only measured the intake clearance for cyl1, it was 0.16mm (specs say 0.13-0.2)
-the inside of the top cover appears to be flaking off (or is that old oil?)
-didn't detect any kind of play or loose screws at the cam mounts
-exhaust pipes seem very rusty to me, for only 43k kms / 27k miles
Now I feel sorry I didn't open it from the beginning, it only took around 1 hour. It got too dark to continue working on it, but tomorrow I'll try to turn the exhaust camshaft clockwise 1 tooth, and measure all the valve clearances.
Today I did remove the top engine cover and discovered the following:
-chain appears to be too worn out
-exhaust cam appears to have skipped a tooth, in the picture the crank was at tdc
-only measured the intake clearance for cyl1, it was 0.16mm (specs say 0.13-0.2)
-the inside of the top cover appears to be flaking off (or is that old oil?)
-didn't detect any kind of play or loose screws at the cam mounts
-exhaust pipes seem very rusty to me, for only 43k kms / 27k miles
Now I feel sorry I didn't open it from the beginning, it only took around 1 hour. It got too dark to continue working on it, but tomorrow I'll try to turn the exhaust camshaft clockwise 1 tooth, and measure all the valve clearances.