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Everything Dirt Bike
General Dirt Bike
New to 4 stroke tuning
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<blockquote data-quote="YZcarver" data-source="post: 165766" data-attributes="member: 744"><p>I just bought this 05 WR450f to go dual sporting on and am looking at the jetting as it has a boilover problem and a hard starting problem. Once it's running, it runs amazing, but the starting is bothersome as it won't start with the electric starter. I have to kick it. It also boils over after less than 5 minutes idling in my garage from cold.</p><p></p><p>I'm familiar enough with tuning 2 strokes. I understand the pilot, needle, main, airscrew, slide and choke functions on my Keihin PWK and PJ carbs.</p><p>The Keihin FCR that's on it has a few new features that I'm unfamiliar with. It has an accelerator pump. Yeah, I get that. The airscrew is in a different spot and requires removing the bowl. Goofy, but yeah, I get that too.</p><p></p><p>I'm cool up to there, but it also has a "starter" jet and a "leak" jet? </p><p></p><p>I assume the leak jet is associated with the accelerator pump. No?</p><p></p><p>Can anyone explain to me how these come into play?</p></blockquote><p></p>
[QUOTE="YZcarver, post: 165766, member: 744"] I just bought this 05 WR450f to go dual sporting on and am looking at the jetting as it has a boilover problem and a hard starting problem. Once it's running, it runs amazing, but the starting is bothersome as it won't start with the electric starter. I have to kick it. It also boils over after less than 5 minutes idling in my garage from cold. I'm familiar enough with tuning 2 strokes. I understand the pilot, needle, main, airscrew, slide and choke functions on my Keihin PWK and PJ carbs. The Keihin FCR that's on it has a few new features that I'm unfamiliar with. It has an accelerator pump. Yeah, I get that. The airscrew is in a different spot and requires removing the bowl. Goofy, but yeah, I get that too. I'm cool up to there, but it also has a "starter" jet and a "leak" jet? I assume the leak jet is associated with the accelerator pump. No? Can anyone explain to me how these come into play? [/QUOTE]
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Everything Dirt Bike
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New to 4 stroke tuning
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