Loud ticking/clacking
I was riding on highway when bike suddenly had noticeable power loss around ~3k RPM and a metallic rattling/clacking sound from top end/right side of engine. Also, felt a wobble on the front end (not as violent as a tank slapper). The noise got worse with throttle/load and sounded like timing chain slap/marbles. (Video 1) Bike still idled and ran but felt sluggish around certain RPMs.
- New CCT
- Changed all exhaust valve shims (all out of spec)
- Realigned timing (was off by one tooth probably due to CCT)
- Fresh oil and spark plugs
Engine rotates smoothly by hand with no binding and timing chain stays tensioned while hand cranking.
Now the bike rides much better and feels fine until ~6k RPM, then it feels like it has trouble accelerating and I immediately let off.
However, there is STILL a loud intermittent ticking/clacking noise at idle and certain RPM ranges (~2.5–6k RPM depending on load/temp) as shown in Video 2.
Wondering if it could still be timing chain/CCT/guide related.
Any help would be appreciated.