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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
'82 Kdx 250
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[QUOTE="DanzKDX, post: 579918, member: 41459"] My KDX hasn't run in 2 years, and here's why. I was on a track 2 years ago and jumped a "double." When I landed, the bike ran like the throttle was wide open. I took the carb apart and found no apparent problem. I parked it and rode my buddies bike the rest of the time. I then moved and it had been in storage. While it was in storage I talked to a few different shops and they said that the "crank bearing" was leaking allowing air past and causing the problem and suggested a motor rebuild to the tune of $500-$700. Since I bought the bike for $300 this didn't sound good. I started talking to local guys I saw on the trail when I was on my fourwheeler and one guy said "seals don't just go like that, it is more of a gradual thing." I took his advice and started checking the bike over. I got a copy of the shop manual (totally out of print) a few months ago and decided to have another go with it. I pulled the carb apart and "dipped" it and it was dirty. I put a new plug in. I checked the reed valve and it is intact. The engine seems to be sealed with no leaks. I looked in the manual and it suggests a mix of 20:1. I was running 50:1 as instructed by a local shop in California 2 years ago. Finally I looked at the air filter because the manual said, "…a damaged or dirty air filter can cause a lean situation." Indeed, it was in pieces. It was old and torn to begin with, when I landed the jump may have finished it off and made it non-existent allowing free flow of air into the motor. Nonetheless, Unifilter is sending me a new filter and I hope the problems are cured. My theory is that between the filter, the mix, and possibly dirt in the carb caused my "wide open" situation. Having now had experience with small 2 stroke R/C engines, I think I had a "lean" condition and not a throttle/ engine problem. Any info you could provide would be helpful, I hope to try and fire her up at the end of the week when the filter arrives. Thanks, Dan [/QUOTE]
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Which ocean is California closest to?
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
'82 Kdx 250
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