There are some items under the tank, but the vibration doesn't usually make them rattle but you can check them the next time you are under there. You can try premium fuel for a couple of tanks and see if you hear a difference. A note about the cockpit experience, the windshield is at a perfect angle to reflect the sounds which come from the engine or bounce up from the ground and direct them to you so may be more amplified or pronounced in one spot vs another due to this. There are some points where vibrations can makes some noise, but they are all harmless. If your chain is adjusted correctly, your valves set correctly, and your oil level correct, then all is probably fine but will be glad to try to pinpoint the issue if you wish.Hi, I know this is an older post but I was hoping you might have some updated info. I have EXACTLY the same issue with my 2022 Himalayan. Everything is fine until I hit about 3700 RPM then it
Hello! I know this is an older post but I was hoping you might have an update on this issue. My 2022 Himalayan does the exact same thing. Everything is fine until 3700 RPM then, from the top end I can hear a knocking sound (almost like bad gas or a timing issue) as it revs up. But here's the thing; if you listen to the exhaust note it sounds fine. It doesn't lose power, it's responsive and rides fine. The noise is most pronounced when I listen directly above the gas tank. I've got about 800 miles on it and it's done it from day one and isn't getting better. First service was completed, exhaust valve good and only a minor adjustment to the intake valve. Changed to an iridium plug but that didn't help.
It's most noticeable in 2nd, 3rd and 4th gears and can be heard a little in 5th. Revving the bike in neutral won't reproduce the sound. Typically happens more noticeably when it's *not* under a heavy load (for instance, it's far less pronounced [or nonexistent] when going uphill with a lot of weight on the bike). But if you're just cruising around and stretch out second or third gear, you can really hear it.
I've read about the harmonics but this seems different to me...but I'm not an expert. The fact that it doesn't lose power and has a clean exhaust note is what has me truly confused. That and the fact that revving in neutral is no problem. Many other threads point to various idiosyncrasies that smooth out as the bike breaks in (runs in). Was this your experience? Did it finally go away?
Any thoughts or opinions would be welcome.
Mine became noticeably quieter and ran stronger over time, probably 2-3 thousand miles. It was weird because I hadn't own a new vehicle or do I remember something which was different after a appreciable time frame.Mine's made "noises" from day one. Lessened as the miles totted up, but still there when I make the effort to hear them. (Note - plural).
Done approaching 10K now in a little over 12 months. If it was going to break, it surely would have done by now.
A friend has more than double my mileage on his, same story.
Air cooled motor, gear driven balance shaft and weight, oil pump sprocket held on by goodwill. All add up. I've heard the term "cacophony" used to describe it.
The tappets, on the other hand, are a mere whisper when I put my ear to the cam box.
@Typhoon i haven’t seen a post reporting this. What does the dealer say? Perhaps this should be looked at?My himi makes a metallic grind that increases when idling on the side stand, yet quietens down when you straighten the bike up. Sounds like cam in cyl head trying to seize as it sounds at half engine speed. I also have the 3500 rpm I'm gonna self destruct sound too. Anyone else sorted this?