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Honda MX & Off-Road Dirt Bikes
Attn: 2002/2003 CR250 Keihin PWK Converts
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[QUOTE="CRPilot, post: 673494, member: 17880"] Faded, I have tried a few more combos since I last chimmed in. What I found is that I don't think I'm fighting a lean condition (ping) at 1/4 anymore. I ran my pilot up to a 38 (from a 27 and all in-between) as well as richend the needle up to the 30-72 as well as the clip up into #4 spot. The end result was it was rich to the point of loading up in a matter of 5-10 seconds of not being on the pipe AND still pinging. I had the opportunity to run some quality oxygenated fuel and at the same time leaned everything out (back to the 30 pilot and stock 74 needle) and it ran great and no ping. Since having the engine ported (mo better) it may need a higher octane fuel even though I requested it be set up for pump. You may be fighting a lean spot, but is the ping from being lean or insuficiant Octane? Give it some thought. Race gas may end up being cheaper than all those jets. [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
Attn: 2002/2003 CR250 Keihin PWK Converts
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