My brother noticed a new noise on his bike last Wednesday when we were riding..
I had a listen, it's definitely not a normal sound. Thinking that there may be something going on in the top end, I pulled the valve cover.
This is what caught my eye. This is the only cam lobe of the 4 that is doing this. The clearance on this valve is dead on spec.
The other intake is 1/1000th tighter. The exhaust valves are in spec.
There's no other indication of a problem. Oil level is fine, with no noticeable shavings or anything like that.
I'm thinking I might as well pull the head and cylinder to make sure everything is fine there.
Does this look like normal cam wear?? (the very tip of the lobe doesn't appear to be scuffed, just the front and back of the tip.)
I had a listen, it's definitely not a normal sound. Thinking that there may be something going on in the top end, I pulled the valve cover.
This is what caught my eye. This is the only cam lobe of the 4 that is doing this. The clearance on this valve is dead on spec.
The other intake is 1/1000th tighter. The exhaust valves are in spec.
There's no other indication of a problem. Oil level is fine, with no noticeable shavings or anything like that.
I'm thinking I might as well pull the head and cylinder to make sure everything is fine there.
Does this look like normal cam wear?? (the very tip of the lobe doesn't appear to be scuffed, just the front and back of the tip.)