She's rich. I can smell it, I can feel it, I don't even have to pull the plugs - the valves need to be adjusted, the carbs synched, I need to replace the crunched header. I know these things - and they didn't just happen overnight. I just haven't had the time lately. In fact, this is the first time I've put any real miles on the bike in a couple of months due to some crazy hours at work (made a 160 mile loop in the hills near Yosemite Easter Sunday, though...).
But I digress...
These things I know, these things I can fix. I'm about to buy a new ZRX, but I'd like to see another summer on the old girl before then, and before any major engine work (one of the reasons behind the new purchase is so I can stay on two wheels while I tear the GS down).
So my problem is (he has one, you ask?), I noticed a sound today that may fall under the "Very Bad Things" category....
I noticed a distinguished dry "whirring" sound at any RPM, cold or warm today. I couldn't discern where it was coming from....
I know valve noise, I know cam chain noise, but I don't know dry whirring. My first guess was the stator, but it didn't sound like it was coming from the stator cover - it sounded like it was coming from the engine, although I couldn't get my ear close enough to tell if it was coming from the bottom end or top end. No change in the sound with the clutch engaged or disengaged, either...
I'm thinking cam or crank bearing....
There are no noticeable knocking sounds, no hesitation, no decreased power, no overheating.... I don't run her (too) hard, and she doesn't burn oil. Seriously. None.
I just changed the oil and filter before my Easter ride, and there were no visible shavings in the oil or filter element.
So, what do you fine GS'ers think? Expect the worse???
Thanks in advance,
-Q!
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