First off, thanks, secondly...crumpled paper?

So I changed the plugs and fuel filter on my '85 VF700F and my baby is running smoother than when I bought it. Thanks to you guys that helped me..

Maybe you could help with this one:

Ever since I changed the plugs and filter I'm getting this sound; it sounds like paper being crumpled over and over, but maybe a bit more metallic. It's not overbearing, but it is consistent. It does it whenever the bike is in motion, including when the clutch is pulled in, and stops immediately when the bike stops rolling. It sounds like it is in the front left (?). It wasn't making this sound before I worked on it, or immediately after.

I've checked for anything loose, something in the air filter, etc., but I haven't taken anything apart yet, as I wanted to get your opinion. Oh, and it is sounding and running perfectly, otherwise.

Thanks, guys!

 

Sounds like it might be a front wheel bearing or front brakes dragging slightly. I'd lift the front wheel off the ground and turn it by hand. See if it will make the noise. If it does, carefully pry the brake pads away from the rotors (make sure the brake fluid doesn't overflow), see if the noise is still there. If not, brakes are dragging. If noise is still there, check the front wheel bearings.

 

Only does it when wheels are rolling?
Coming from left side?

An older bike with questionable maintenance?
Check your chain - A likely culprit.
It may be dry and/or loose.

- Clean it with a rag sprayed with WD-40.
* Spraying the rag instead of directly on the chain prevents WD-40 overspray from getting on the brake rotor or tire, both VBT's (Very Bad Things).

- Lube with a product specifically made for O-ring motorcycle chains (my favorite is Maxima Chain Wax).
* Spray the lube on the BOTTOM run of the chain (under the swingarm) so that the surface that actually contacts the sprocket gets the lube - Centrifugal force will force the lube into the chain and minimize messy lube fling.

- Adjust to spec: about 1 1/2" vertical play on the bottom run, midway between sprockets.
* Most folks tend to keep the chain too tight. Too tight hastens wear of the chain and sprockets. The suspension also needs some slack for full, smooth suspension travel.

** I'm curious what you find.
Keep us posted.