KX Riders
Maintenance & Technical => KX250 / KX125 => Topic started by: Shredstar on August 01, 2013, 05:55:24 AM
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Hi guys the previous thread went off topic I think
So I've started a new thread I hope that's ok
So I've got an 04 kx250
Carbs off anything I should know/tips before dismantling ? For a beginner?
I'm stripping because I'm getting spooge symptoms. Hence running rich
I'm running this at an altitude at 950ft above sea level.
Any info would be greatly appreciated, pretty desperate for a custom walk through of a strip clean and setup
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Hello.
As per the other thread, you still need to pull the jets and the needle out.
Until we know what size they are (Markings are on the jets and needle) we can't really give you a place to go.
Advice?
Don't bend or break anything :-o
Take some pics of the inside and post them so we can see how clean or dirty.
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You never acknowledged Flyin Hawaiians post on the other thread about it possibly being a bad crank seal like his was....have you verified that you don't have a bad seal?
If not...you could possibly be pissin DIrectly into the wind trying to jet it correctly. :?
Have you noticed your gearbox oil slowly disappearing for no apparent reason?
Probably wouldn't hurt to do a leak down test before you possibly start pullin your hair out because of a bad seal and not improper jetting.
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You never acknowledged Flyin Hawaiians post on the other thread about it possibly being a bad crank seal like his was....have you verified that you don't have a bad seal?
If not...you could possibly be pissin DIrectly into the wind trying to jet it correctly. :?
Have you noticed your gearbox oil slowly disappearing for no apparent reason?
Probably wouldn't hurt to do a compression test before you possibly start pullin your hair out because of a bad seal and not improper jetting.
All true.
Jetting won't fix a mechanical problem.
In this case I went for the jetting first just because that was the question asked and it's easy to verify as a starting point and, it's a cheap and easy fix if that is really the problem.
But lets face it... A 10 year old 2T probably needs a bit of help mechanically :-)
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I wasn't trying to direct that at you Blaster....I just noticed that Shredstar never commented on FH's post about seals...leak down tests are free too if you have the correct access to one....or the means to make one. :-D
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Hey Foxx4Beaver.
I wasn't directing my reply at you either.
I'm trying to help Shredstar to see that we can't help if we don't get answers to our questions.
We each have reasons for asking these questions, all of them well intentioned.
Come one Shredstar, help us help you :wink:
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Hey Foxx4Beaver.
I wasn't directing my reply at you either.
I'm trying to help Shredstar to see that we can't help if we don't get answers to our questions.
We each have reasons for asking these questions, all of them well intentioned.
Come one Shredstar, help us help you :wink:
A-men to that!
Feel free to move/modify my posts from this thread over to the other one if you think it's more appropriate over there. :-)
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I recently went through a slew of jets before i was able to get my bike to run right... I ended up with 155 main, 50 pilot nafg needle second clip from the top 50 power jet. I also have a 04 KX 250 with extremely low hours. I'm still not sure if my main seals are leaking or not... i had to drop that main jet down so low it makes me wonder you know? Bike seems to run good now... How else can you tell if the main seals are leaking?
Oh by the way, i'm in Grants Pass Oregon...so elevation 1000-4000 riding
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Gotta do a leak down test with positive and negative pressure.
No other way to do it that I know of.
http://www.kxriders.com/forums/index.php/topic,11928.new.html#new (http://www.kxriders.com/forums/index.php/topic,11928.new.html#new)
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Hi guys just seen the posts, I've been working away last week so haven't had to work on bike, ill be on it tomorrow so ill take needle jet out and report back and take some pics, I've got some concerns though, as the weather changes temperature/humidity and altitude from different riding locations and me altering the jetting too much I don't want to make the jetting too lean just stop the spooging this was the original problem, so does anyone have the stock settings for jet settings so I can see if they have been Changed that way I could thoughly clean first and check if its been changed from stock making it spooge oil from the muffler, then decide how much ill need to change if I need to please
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2004 KAWASAKI KX250 Sea level using 32:1 Premix
After market jetting is as recommended by Pro Circuit
(http://www.oem-cycle.com/forum/download/file.php?id=1133)
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Hi guys just seen the posts, I've been working away last week so haven't had to work on bike, ill be on it tomorrow so ill take needle jet out and report back and take some pics, I've got some concerns though, as the weather changes temperature/humidity and altitude from different riding locations and me altering the jetting too much I don't want to make the jetting too lean just stop the spooging this was the original problem, so does anyone have the stock settings for jet settings so I can see if they have been Changed that way I could thoughly clean first and check if its been changed from stock making it spooge oil from the muffler, then decide how much ill need to change if I need to please
You will need to get the needle out and also take the float bowl off and remove the main and pilot jet in there. The power jet is also under the float bowl. Let us know what those jets are.
Also, how does the bike run at WOT? (wide open throttle) Does it smoke like crazy and spit and sputter, kinda sound like the spark plug is about to foul?
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Thanks for the info sandblaster
Tbh Charlie it all sounds and feels ok when running through all throttle opening positions no heavy smoke at all really not that I notice, then again I'm no expert, the spark plug had fouled a few times last time I had it out enough so It wouldn't start and I had to physical remove it replace it with an iridium one :) but I think that was due to my first hour of riding in 9 years driving shal we say slow, which made it black...
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Quick question Is all carb cleaner the same the manufacturer is 'car care' just wanted to check with the pros before I spray it in my carb
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Quick question Is all carb cleaner the same the manufacturer is 'car care' just wanted to check with the pros before I spray it in my carb
If you're just buying "on the shelf" carb cleaner in a spray can at your local auto parts store,it'll be fine.
Some auto stores around here carry a more "industrial strength" that comes in 5 Gallon pails that you have to ask for.
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Quick question Is all carb cleaner the same the manufacturer is 'car care' just wanted to check with the pros before I spray it in my carb
Any carb cleaner you buy in aerosol cans at wal mart or auto parts store would be fine. Take the carb apart as much as you can and spray in all the little holes that you can find. I would recommend wearing safety glasses while doing this. Also if you have access to a air compressor it is a good idea to blow out all the holes as well. Then document all the jetting that you have and start playing with leaner jets. My local bike shop let me borrow a hand full of jets to get my bike dialed in. I just brought back what I didn't need and bought the ones that I decided to keep. With the carb still on the bike it is fairly easy to change out the main and the pilot by loosening the two hose clamps and twisting the carb enough to remove the bottom plug. You can access the two jets from there. I just kept playing with it until I found what made the bike run the best. Also keeping an eye on the spark plug color. Ultimately you want it to look mocha brown. Not white or black. Your throttle should make the bike rev up crisp and clean. While holding the throttle wide open (not riding the bike) It should scream with minimal smoke coming out the tail pipe.
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2004 KAWASAKI KX250 Sea level using 32:1 Premix
After market jetting is as recommended by Pro Circuit
(http://www.oem-cycle.com/forum/download/file.php?id=1133)
All the settings are as stock and the carb seems undamaged apart from the I don't know which the 'power jet' is which is shown in ye table as 50? I can't find it? Can someone clarify where to check please,
It's cleaned brilliantly with carb cleaner thanks guys for the infor on the cleaner and compressed air tips, looks a treat now! Only problem I've got is the 4 screws holding the flow bowl are stripped the person previously made a balls of it so I had to destroy them getting them out.. Why they are not allenkey fittings I don't know.. But they will be when I get them replaced :) the next thing I noticed was the gasket between the flow bowl and the rest of the carb has some 'reddish crusty paste' which looked like sealant so I took it off and cleaned and cleaned gasket and see if it leaks if I need a new gasket ill get one,
Oh the only thing that differed from The table was the main air screw was out 1.25 turns rather than 1.5 turns so I out it to stuck but this is adjustable anyway once built back up.
Just thought I'd report back to the gurus of my findings!!
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???
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Not sure what :? means but are you waiting for a reply to a specific question?
If so, just let us know.
Also, have you bought a manual for your bike yet?
I don't have one specific to your year or I would look for you.
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Hi yeah sorry just wrote a question mark and that smiley appeared lol, what is 'power' in the table above the one set at '50' I can't find that jet in the carb can you explain please
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Hi yeah sorry just wrote a question mark and that smiley appeared lol, what is 'power' in the table above the one set at '50' I can't find that jet in the carb can you explain please
yes that is the powerjet...and it is located directly below the powerjet solenoid(you have to take the bowl off)....this isn't the best pic,but I'm not removing my carb right now while it's in my living room,but this is the solenoid...there should be a very small slotted screw head, directly under it once you have the bowl off...and that is the powerjet.
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