btw
this is the sound of a brand new tribute black:
https://www.youtube.com/watch?v=pN-hD5wR2pI
Interesting! Also has a fairly obvious "valve clatter", in my opinion.
I'd like to solicit some guidance in what to look for to quiet valve noise. My 2012 C5 has gotten fairly noisy in the last year, and I'd like to get it back to where it was. I'm right at around 7900 miles on the odometer. The machine was quite a bit quieter when I purchased it at 1700 miles on the odo. Here's more background:
Around 3000 miles there was a substantial increase in valve noise, but it was intermittent.
Shortly after this, the auto decompressor cam failed, the pin stayed up and things got quite noisy. I rode the bike a few miles in this condition, then put it up waiting for the replacement cam.
Replaced the auto-decomp. cam and adjusted cam backlash and the engine was quiet again.
Now, 5000 miles later, considerable valve noise is present, but appears intermittently. I can start the engine and won't notice tapping sound at all, but it will appear later, or will be present on a subsequent startup.
The sound seems at a minimum when I reduce throttle and cruise at moderate rpm. Seems at a maximum with the engine under load or idling.
Tapping seems to be coming from exhaust tappet, but hard to localize.
I've checked the rockers. The blocks are secure and play in the rocker bushings is minimal. With the rocker covers off, there seemed to be sufficient oil flow to the intake rocker, and three times greater flow to the exhaust rocker.
I'll try to make a recording next week when it stops raining. My next thought was to open up the cam side cover and adjust the cam lash. Is it possible to check the lifters in place?