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Hi guys,
new here, old hand in moto, I own recently a 2017 Honda CB 1100 RS(now 10.000 km) I ride it a little and I have important issues as follows:
- Knockings under the front valve lid(front right) only after the engine is hot.(camshaft, valve timing, cam chain???)
- strong vibrations in the handle bar(high pitch) after 3,200-5.000 rpm doesn't matter the gear, speed or if I rev' it on stand. I check and all the nuts are tightened OK, vibrations come obviously from the engine. I've used first time AmsOil 10w40, then I change it to OEM Honda 10w30-MA, I've changed the sparks too and... nothing.
- sipping oil from the valve cover gasket, but this is a common fail as I've noticed to many air-cooled Honda.
I need your expertise and experience to find what is to be repaired(what's the cause), those issues are driving me Crazy for such a "young" moto with such big problems. I've visit some mechanics(even at Honda) and they didn't find/guess the real problem, they raise the shoulders. Did you encounter such things? Thank you!