Just woundering, does anyone view or visit this forum? My KLR has a knocking noise from Idle to just about 3100 rpm. Could this be caused by the CDI unit or KACR unit? After reaching 3100 rpm the engine smooths out and runs like a bat out of heck.

The forum is here in case anyone wants to stop in and ask a question, I have so many other site that I have not had a chance to promote this one yet, but it will improve once I take the time to advertise it properly.

For the knocking, I'd be sure and check the oil level, I had a bike in here that was half a quart low and knocked terribley, but then with a full oil tank the knock disappered.

Hey Deacon,

Mine does that too. I've just acecpted it.
Dont know why it happens. and Havnt tried to figure it out.

This Place will get more active soon . and I'm sure others may have a better answer. (for us both)

Mine doesn't knock, but it has a "ticking" sound to it. Oil is full. The ticking sound is much more noticable one I put on a Moose Skidplate.

For Ticking: Take off your valve cover and check to see if your KACR is scraping the underside of the cover.

(Be super careful when putting the cover back on... if you do not head the in.lbs. in the manual, you will crack it.)

The KACR should kick out at 1000-1200 rpms.

Ticking and/or knocking is a normal condition in a single cylinder engine within boundaries.

Things to check; camchain tension, valve adjustment, balancer chain tension.

It could be top end carbon also. Treat the fuel with some Seafoam and ride a tank through it. Amazingly effective stuff.

Mine has a little knock also. From just off idle to about 1800 rpm. I've quit worring about it though. The thing runs like a top.

this sound awefully familar

Knocking or ticking? If you lug the KLR it will knock in any gear, no harm though. If its ticking it could be anything from valves, to oil?

Its a 100mm piston! any cannon that size should knock. Plus it has a steel liner instead of plated, so your clearances has to be larger.

Mine 04 made the unusual noise it got worse...I found the problem a loose exhaust bolt..think its a recall now...loctite..no more noise.

Holycaveman, I hope you didn't really believe that lugging an engine down doesn't hurt anything. You're harmmering away at valves and starving an engine for oil, not counting carboning up everything in the head area. I've seen valves on locomotives looking like they were being sucked up into the exhaust chamber for this very thing. It is not an overnight problem that you will catch next week or maybe even next month, but someone down the line pays for it, and a gunked up top end is very detrimental to horsepower and torque.