Alright, heres my problem. I have a 94 KX 250 with Boyeson Power Reeds, Pro-Circuit Pipe and Silencer, Stock Gearing. My bike runs pretty good, but it could be more zippy off the bottom. It doesn't bog, it just seems like it is running rich, it also blows more smoke than I would like. I ride at 4000-6000' usually at about 80 degrees F. I have a 152 Main, 40 Pilot, Needle Clip 2nd position, Pilot 2 turns out. Klotz R50 40:1, BR8ES Plug. I am pretty sure my bike is still rich, especially off the bottom. My plugs are coming out black but not wet. But here is my real dillema, I am pretty sure I need to go LEANER on my pilot, but I can't find one smaller than 40. I have checked like 4 local dealers and none of them have one, any suggestions? Thanks!
Better KX Throttle Response?
- Thread starter Studboy
- Start date
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- #4
I'm pretty sure it's not my p/valves. I only have 6-8 hours since my rebuild. It isn't really a lack of power, just more of a lack of response. When I give it 1/4 throttle it goes brap braaap brap braap brap brap instead of brrrrraaaaaappppp. I know you probably aren't understanding this, but it is hard to explain!
I am almost positive smaller pilot jets are available if they are are special ordered. If this doesn't work try leaning the throttle slide cutaway. There is much discussion on this topic elswhere in this forum. Check the mods and performance section where myself and others have something to say about this subject.
Your ridin' bud Kurt
Your ridin' bud Kurt
smooth sail
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- Dec 10, 2001
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Give Sudco a call at 323-728-5407. If it is available (as far as jets), they either have it or can get it. Triple taper Kawasaki needles are a different story. I have found Boyesen reeds often need a leaner main also. Fuel quality and type also play a part. Do a search on this site for "fuel" for more info. Also, touch this link for a very good resource on jetting info: http://ericgorr.com/techarticles/carbtuning.html
Smooth
Smooth
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- #8
Thanks a lot for the replys! I do have boyeson power reeds. KX-727 where in Utah are you at? I'm in Taylorsville. I stopped over at Plaza Cycle today, they also say the smallest is 40. I have also visited Cycle Hause, Mountain High, and 2 other small shops to no avail! Would a different slide cutaway be the way to go? I hear that they are expensive! Would a different needle do anything? Well, I think I'm going to try to get a smaller pilot first...
MX-727
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- Aug 4, 2000
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Could be Ken.
I'd avoid Plaza at all cost. They just picked up Kawasaki in the last couple of months, and I've never had any good dealings with them before that. I can give you many horror stories, but not here. South Valley is the shop I'd recommend for KX and YZ's in the SLC area.
I just checked Carb Parts Warehouse. Keihin makes a 35 and 38 for that carb. That's the problem with were you went. They just checked the fiche from Kawi, which only lists down to a 40.
Ken is right though, a 40 should be lean enough for our altitude. Check the float height as that could cause a problem if it is too high.
I'd avoid Plaza at all cost. They just picked up Kawasaki in the last couple of months, and I've never had any good dealings with them before that. I can give you many horror stories, but not here. South Valley is the shop I'd recommend for KX and YZ's in the SLC area.
I just checked Carb Parts Warehouse. Keihin makes a 35 and 38 for that carb. That's the problem with were you went. They just checked the fiche from Kawi, which only lists down to a 40.
Ken is right though, a 40 should be lean enough for our altitude. Check the float height as that could cause a problem if it is too high.
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- #11
KX-727. Yeah, I would never buy a BIKE from Plaza...they only sell to newbies. I was just there because they have a lot of parts. Horror stories about Plaza, there are plenty! I went in there once and asked the guy at the counter "What oil has been running good in KX250's?" and he says "Well, is that a two stroke or a four stroke.) I just started laughing, anyways. I am pretty sure my crank seal isn't leaking, 100%. My bike runs fine, just needs some fine tuning. I'll check the float height, adjust according, and report back. I'm going down to Little Sahara today, so I'll post back tonight.
Thanks for your help everybody. Sweet.
Thanks for your help everybody. Sweet.
