misfire at idle question

[Paul]

Ok, I'm doing the Doo this fall. There is so much information about this but I haven't found the parts on Fred's site, maybe I'm missing them. How many replacements are theer and whose is the best, and where can I buy it. I'll do the spring too! Paul

[Jim Tegler]

Hi Mike, I left my 1991 KLR for the summer and firing it up gives me, what sounds like, similar grief to your own. Unlike the respondents though, I am rather lazy. I hear Jeff is working on creating the first private spacecraft. Anyways, I was planning for the low effort approach, which would be run some "Seafoam" through the gas tank. Just a thought. Jim Posted by: "Michael A Zlotowicz" maz211@... vx800mz Thu Sep 18, 2008 12:11 pm (PDT) Hello fellow KLR enthusiasts, I recently purchased a parts KLR650 to complement one I already own. It had been sitting outdoors for 3 years and written off as dead. I bought it for parts, but after a thorough fuel line cleaning, new plug/needle/ filters/jets, it actually started and ran, so I cleaned it up and now have two KLRs. Now I have a vexing problem. It starts and runs strong, and runs perfect at all speeds. However, at idle, there is an irregular misfire. Every once in a while, the rpms will drop sharply for a half-second, then return. At 1.4krpm, it kills the engine, but if I hold the speed to 2krpm at idle, the engine will recover from the random dip. The idle jet is new, and so are the fuel and air filters. It otherwise idles normally, and this misfire is not predictable. It becomes less frequent as the engine warms up. I figured this was a post-sitting-outdoors gremlin, but it hasn't gone away despite putting 100 miles on the bike post-resurrection. I swapped the CDI box with my old bike, but that hasn't changed anything. The spark plug is new and gapped right. Is this ignition-related? A short in the safety switches? I traced all the wires and nothing is visibly shorting. Thanks for your feedback! Bike is 1997. Mike Z Howdy, _________________________________________________________________