So, I bought a used KLR, it sounded nice, started easily with a cold engine, seemed well maintained. When riding home though, I noticed that after a while on highway speed the bike would make some very soft cyclic noise (sHss... SHss). Is that normal?
Engine wise so far nothing else seems wrong aside from the very rare rattling once in a while when I start accelerating (which I'm used to from my 250 bike, I imagine it's because it only has 1 cylinder).
Any insights would be appreciated, thanks.