name that symptom...

[Scott Squire]

Jim, and others... Thanks to a couple of you for putting your $.02 in. So far I have a couple of suggestions that I start checking around my chain/countershaft area. Good idea, next on my list of things to do. But I'll tell you why I didn't jump to figuring that automatically--it's because it *seems* to be dependent upon RPM, not on wheelspeed, and it seems to happen at about the same RPM in at least two different gears. That said, I'm going to go work over my chain. Inswer to the question about bolts loosening, yes, some did loosen, in spite of my best efforts to keep on top of it. I've also dramatically overstressed the footpeg bracket bosses on the frame--in the right one, an attempt to replace the bolts post-ride netted me one stripped hole and one busted-loose captured nut. It's off to the fabricators! Thanks again all, I'll entertain more ideas and check on those that I have, and try to report back if/when I find definitively what's up. Best Scott Squire

>From: Jim Hyman >To: scott_squire@..., KLR List DSN_klr650@yahoogroups.com> >Subject: re: Name that symptom... >Date: Tue, 09 Apr 2002 02:04:18 -0700 > >Scott, > >Doohickey? Not likely, but with your KLR's mileage, it would be best > >to remove both left side engine covers and the rotor & do a close >inspection of the balancer chain & parts. > >My best guess? Your chain is intermittently hitting the outer lower > >rear portion of the front sprocket cover. >Is the chain overly worn? >Is the chain too loose? >Is there any in & out play with the countershaft and/or sprocket? >How is the master link (if you have one)? >Any unusual wear marks on the swingarm or frame near the swingarm >pivot? >How do the front & rear chain guards look? > >Always check the easy things first. Remove the sprocket cover & see > >if anything changes, noise-wise. Don't wear baggy pants with the >cover removed. > >Obi-wan-Professor A9 Federal Way, WA. [USA] > >ps: After your Baja trip, have you checked ALL your nuts & bolts for > >proper tightness? Are you missing your nuts? > >++++++++++++++ >Scott wrote: > >.Hello, esteemed KLRistas, > >I just returned from a brief but intensive bash about upper Baja > >on my KLR, and notice a (dread) New Noise. I'd love to hear what > >you think it might be. It occurs at low speeds, usually 2nd and 3rd > > >gear, going through 3000rpm--just a little over or a little under. > >Makes a single 'slap' or a 'tick' noise, then another maybe a few > >seconds later [snip] > >Looked around, and it doesn't seem to be any kind of loose > >bodywork or sticks or cactus or nothing like that. [snip] > >* I can't reproduce the noise without a load (rolling) on the >engine. > >* I can't tell you *exactly* when it will happen, but as I said >above, > >it does seem to be around 3000rpm, either accelerating up > >through or backing down through that engine speed. [snip] > >What I'm fearing somebody's going to say "doohickey." Help Me > >Obi-List... you're my only hope. Best > >Scott Squire >

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