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Honda MX & Off-Road Dirt Bikes
Backfiring 2001 CR80
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[QUOTE="ewbish, post: 604471, member: 28176"] Your running a little light on the oil. You should be running 32:1 which is 4 oz of oil per gallon of gas. You are running at about 42:1. Here is a handy chart: http://www.rctek.com/pdf/fuel_to_oil_ratio_chart.pdf Also, does it just backfire when you kick it? Does it run good once it's lit up? If it just backfires once in a while when you kick it, that's not abnormal. Odds are it's just time to do some maintenance: 1. Filter should be cleaned at least every other week. Use a good filter oil, NOT motor oil (I know, that's what the user manual says, but honda hasn't changed the filter section of their manuals for 30 years). 2. The carb float bowl should be drained periodically. You should clean the carb once a month if you ride in either a very dry dusty climate, or wet muddy climate. You can minimize this with a 2.00 in line fuel filter. 3. Inspect the reeds periodically, if the petals are warped or frayed it will cause problems. 4. The Honda intake box sucks. Take it apart, and seal the carb boot to the box with a little yamabond (the stuff honda uses cracks in about 6 months), otherwise it will start leaking crap past the filter-not good. If it's jetted correctly, spark plug will last forever-I change my daughter's in her '99 CR80 about once every 6 months just because. Eric [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
Backfiring 2001 CR80
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