Help me please: Strange rattling/hissing sound V7 Special 2022
EDIT: I found the exact same sound in this video clip (0:38):
https://youtu.be/DUBXhMtZWbU?t=38
this sound here is really louder than the engine. maybe it helps finding the problem? THANK YOU ALL!
I went to have a look at an used (5000km) 2022 V7 special.
The motorcycle is in pristine shape. It looks like it just left the showroom.
However, two things threw me off while testriding:
- the exhaust/headers have very different coloring. I will attach pictures if its possible.
- the engine makes a really annoying hissing/rattling sound (metallic).
- this sound does not change in frequency/pitch (higher-lower sound)
- it gets louder/quieter depending on the RPM, not the speed.
- it is not the gearbox, because it is there in neutral with high RPM, as well as while riding.
- it is always present (cold/hot engine)
- the sound can be best heard in the standard seating position. if i move my head back/right/left, the sound gets quieter. it is not my helmet btw.
- the motorcycle accelerates fine, no big vibrations, no power "holes", no stuttering.
I have tried the V7 special 2026 and it definitely did not have that sound.
Now the owner will take it to service (after i told him, he heard it too) for a "big" service (valve clearance, etc.)
Does anyone have experience with this and should i avoid buying this beautiful machine? I really dont want this to be part of the "character" because it is so loud you cant hear the beautiful engine itself.
PS: I have two audiofiles. One is original (where its hard to hear), the other is manipulated with EQ to single out the sound: it is best described as "metallic cicadas that dont pause". im sorry its so hard to describe.
File 1: Original sound: https://www.dropbox.com/scl/fi/nj1a1whxbnrwrfd02joca/V7-Special.mp3?rlkey=bg5s944xojakok7nplseaf17j&st=edfdwxb3&dl=0
THANK YOU ALL FOR YOUR TIME AND HELP.