shimming valves...

Aha, right. I recall the kerosene being the main chemical being used in most engine flushes. Well that's good to know, thanks chacal I now have a few loud valves, and a slipping clutch to resolve. Nothing that won't last another riding year or two.

 

You're very welcome! But.......

Not a good thing. Might want to check the shim clearances, and remedy as needed. A lot cheaper than having to do major head work at a later date!

 

Good point. I find the valves are significantly loud only at certain low rev points. I don't hear them TOO much besides then. Again good point though. I'd hate to have to pull the head all apart in the middle of riding season. :O

 

I have always said that there are GOOD Noises that Engines make.

Noisy Valves CAN be good Noises. But, the noise can't be too severe.
A Noisy Valve within specs is OK because you KNOW that Valve is closing.

It's when your Valve Train ISN'T making noise that you need to get nervous and check the clearances of all the Valves.

If they are Noisy ... but, within specs ... leave them be.
If they are Noisy ... AND, out of specs ... adjust the Clearance by changing the Shim.

You shoeld hear all kinds of Noises if you are Flushing-out an Engine with a light weight petro-product in place of recommended lube.

Valves, Clutches and Idler Gears should be making a racket until you get them quieted-down with the right weight Oil.

Don't be running that Engine at any great speed without the right weight Oil in there ... or, you'll have noises that you don't want to hear.
Bearing knocks!

Without the right weight lube in the Engine the risk of spinning a bearing is pretty high ... so, flush-it ... drain-it and get it filled-up with the right stuff before anything you'll regret happens and puts the Bike out-of-commission!