Question about 1998 Honda XR 400R

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Immediate overheating... with in 1 to 2 minutes of warm up... bad enough to make the header pipe glow red.

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It sounds like the fuel mixture is running extremely lean for some reason. Disassemble the carb and clean out the jets. Inspect any rubber parts between the carb and the intake. Make sure the intake manifold doesn't have an air leak.

Posted on Oct 08, 2009

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