[BikeNRun]

I have a theadless headset that makes clunks when going over bumps, however, the stem is tight against the spacers. Is that a good way to check for looseness, or could it be that the bearings are bad?

 

[Dion]

Have you pulled the front brake and wiggled it? I have the same thing going on with my rigid 29'er and one of my 'cross bikes. rft:

 

[ae111black]

loosen the top cap than the two stem bolts than lift the stem and you should be able to see the bearings (I'm assuming it's a loose ball HS) than you can see whats going on.

 

[shiggy]

I have a theadless headset that makes clunks when going over bumps, however, the stem is tight against the spacers. Is that a good way to check for looseness, or could it be that the bearings are bad?

The headset can still be loose with the stem "tight" against the spacers.

Loosen the stem bolts. Tighten the top cap bolt slightly. Check for play. Tighten stem bolts.

 

[Slee_Stack]

My stock headset had play regardless of what I did with it. I replaced it. No more play. Headsets are cheap (or can be if you don't need bling).

 

[nachomc]

My stock headset had play regardless of what I did with it. I replaced it. No more play. Headsets are cheap (or can be if you don't need bling).

Assuming he doesn't have a press and all that good stuff, an adjustment at the LBS or tightening himself is cheaper than a new headset alone (like the C3), not even factoring in price for install at the LBS.