Clinician
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Post by vapor on Feb 7, 2022 18:24:24 GMT -6
Ever get this fixed?? My thoughts would be fuel. Carb issue. Or pinched line for air or fuel.
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Clinician
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Post by vapor on Feb 7, 2022 18:13:15 GMT -6
I’m going to make a guess here…somewhere in that bike’s life, wiring got misplaced. Especially if the kill switch is acting opposite.
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Clinician
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Post by vapor on Feb 7, 2022 17:53:08 GMT -6
Based on your symptoms, you may want to focus on an air leak. These engine’s problems are usually dramatic as they operate so efficiently. Check, or better yet, replace ALL the original rubber lines. Chinese rubber lines are poor in quality do not hold up to oxidation and heat of this high rpm engine and use. My diagnosis is based on you stating that your problem occurs after continued use and heat build up.
I just recently had another Chinese 250cc that had this exact issue. Even at times, when hot, varied engine racing. Air intake tube had very small cracks. Very small. This creates a lean mixture. Sadly, the owner was extremely frustrated with his “hit and miss” repairs before bringing for help. He tools around non stop now.
Design is good, typically workmanship and materials are your issues.
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Clinician
Currently Offline
Posts: 4
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Joined: Feb 7, 2022 16:23:45 GMT -6
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Post by vapor on Feb 7, 2022 16:44:03 GMT -6
I wouldn’t go selling it. This will be something simple and just a matter of gaining some knowledge or finding a neighbor that is more adept engines. There are several simple tasks to diagnose if your dealing with spark, fuel or compression issues. I’m gathering from years of experiences, Spark or fuel. You’ll be happy for this problem as the piece of mind learning from this repair is an awesome feeling going down the road!
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