I think I found your problem...
 

Doing a rebuild on a buddy's KLR.

So far, it's going like this...

JC

That'll buff out.

Extra crispy....

Was it one of those "I don't know what's wrong...it was running just fine" kinda deals?

To which you reply, "Oil, mother fucker!!! You ever heard of it?!"

No, it was more of a, "It's making a weird noise" kinda deal.

To which I replied, "Sort of a, whackity whackity whackity whackity kinda noise? :lol:

JC

What shape is their doohickey in? That thing cause all kind of mesas in klr engines

pfft, what's the problem? :lol:

I thought that all KLR pistons looked like that.

Is that a hole burned through the top of it, or a carbon deposit?

That was the first thing I checked. The previous owner did an Eagle Mike job, and the spring tension was good.

I think he sucked some water in through the air box, the sludge in this fucking thing is unreal, (it's only got 20K on it :lol:)

JC

Just Carbon.

Aside from the fact that it's completely fucked, it seems to have been in pretty good tune.

JC